Fix --host_features with multiple transitions

Fixes bazelbuild#13839 (comment)

Closes bazelbuild#17625.

PiperOrigin-RevId: 513249316
Change-Id: Ied4ab6958febaf320ae9e0f906c8071db0077e43

Author: keith

src/main/java/com/google/devtools/build/lib/analysis/config/CoreOptions.java

@@ -1026,6 +1026,7 @@ public FragmentOptions getExec() {
 
     // === Pass on C++ compiler features.
     exec.incompatibleUseHostFeatures = incompatibleUseHostFeatures;
+    exec.hostFeatures = ImmutableList.copyOf(hostFeatures);
     if (incompatibleUseHostFeatures) {
       exec.defaultFeatures = ImmutableList.copyOf(hostFeatures);
     } else {