feat(compiler): Implement constant propagation for template literals (facebook#33139)

New take on facebook#29716

## Summary
Template literals consisting entirely of constant values will be inlined
to a string literal, effectively replacing the backticks with a double
quote.

This is done primarily to make the resulting instruction a string
literal, so it can be processed further in constant propatation. So this
is now correctly simplified to `true`:
```js
`` === "" // now true
`a${1}` === "a1" // now true
```

If a template string literal can only partially be comptime-evaluated,
it is not that useful for dead code elimination or further constant
folding steps and thus, is left as-is in that case. Same is true if the
literal contains an array, object, symbol or function.

## How did you test this change?

See added tests.

DiffTrain build for [ac06829](facebook@ac06829)

Author: pull[bot]

compiled/eslint-plugin-react-hooks/index.js

@@ -40446,6 +40446,52 @@ function evaluateInstruction(constants, instr) {
             }
             return null;
         }
+        case 'TemplateLiteral': {
+            if (value.subexprs.length === 0) {
+                const result = {
+                    kind: 'Primitive',
+                    value: value.quasis.map(q => q.cooked).join(''),
+                    loc: value.loc,
+                };
+                instr.value = result;
+                return result;
+            }
+            if (value.subexprs.length !== value.quasis.length - 1) {
+                return null;
+            }
+            if (value.quasis.some(q => q.cooked === undefined)) {
+                return null;
+            }
+            let quasiIndex = 0;
+            let resultString = value.quasis[quasiIndex].cooked;
+            ++quasiIndex;
+            for (const subExpr of value.subexprs) {
+                const subExprValue = read(constants, subExpr);
+                if (!subExprValue || subExprValue.kind !== 'Primitive') {
+                    return null;
+                }
+                const expressionValue = subExprValue.value;
+                if (typeof expressionValue !== 'number' &&
+                    typeof expressionValue !== 'string' &&
+                    typeof expressionValue !== 'boolean' &&
+                    !(typeof expressionValue === 'object' && expressionValue === null)) {
+                    return null;
+                }
+                const suffix = value.quasis[quasiIndex].cooked;
+                ++quasiIndex;
+                if (suffix === undefined) {
+                    return null;
+                }
+                resultString = resultString.concat(expressionValue, suffix);
+            }
+            const result = {
+                kind: 'Primitive',
+                value: resultString,
+                loc: value.loc,
+            };
+            instr.value = result;
+            return result;
+        }
         case 'LoadLocal': {
             const placeValue = read(constants, value.place);
             if (placeValue !== null) {

compiled/facebook-www/REVISION

@@ -1 +1 @@
-8a8df5dbdd57bf63d5156c1a9cba21ac6106b83d
+ac06829246287751e6b74bd99cd1b39d1aeba06a

compiled/facebook-www/REVISION_TRANSFORMS

@@ -1 +1 @@
-8a8df5dbdd57bf63d5156c1a9cba21ac6106b83d
+ac06829246287751e6b74bd99cd1b39d1aeba06a

compiled/facebook-www/React-dev.classic.js

@@ -1538,7 +1538,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-classic-8a8df5db-20250507";
+    exports.version = "19.2.0-www-classic-ac068292-20250508";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-dev.modern.js

@@ -1538,7 +1538,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-modern-8a8df5db-20250507";
+    exports.version = "19.2.0-www-modern-ac068292-20250508";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-prod.classic.js

@@ -636,4 +636,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-8a8df5db-20250507";
+exports.version = "19.2.0-www-classic-ac068292-20250508";

compiled/facebook-www/React-prod.modern.js

@@ -636,4 +636,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-8a8df5db-20250507";
+exports.version = "19.2.0-www-modern-ac068292-20250508";

compiled/facebook-www/React-profiling.classic.js

@@ -640,7 +640,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-8a8df5db-20250507";
+exports.version = "19.2.0-www-classic-ac068292-20250508";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-profiling.modern.js

@@ -640,7 +640,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-8a8df5db-20250507";
+exports.version = "19.2.0-www-modern-ac068292-20250508";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactART-dev.classic.js

@@ -19032,10 +19032,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.2.0-www-classic-8a8df5db-20250507",
+        version: "19.2.0-www-classic-ac068292-20250508",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.2.0-www-classic-8a8df5db-20250507"
+        reconcilerVersion: "19.2.0-www-classic-ac068292-20250508"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -19069,7 +19069,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.2.0-www-classic-8a8df5db-20250507";
+    exports.version = "19.2.0-www-classic-ac068292-20250508";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&