PHP 8.0 | Squiz/LowercasePHPFunctions: allow for nullsafe object operator

Includes unit test.

Author: jrfnl

src/Standards/Squiz/Sniffs/PHP/LowercasePHPFunctionsSniff.php

@@ -133,7 +133,9 @@ public function process(File $phpcsFile, $stackPtr)
             return;
         }
 
-        if ($tokens[$prev]['code'] === T_OBJECT_OPERATOR) {
+        if ($tokens[$prev]['code'] === T_OBJECT_OPERATOR
+            || $tokens[$prev]['code'] === T_NULLSAFE_OBJECT_OPERATOR
+        ) {
             // Not an inbuilt function.
             return;
         }

src/Standards/Squiz/Tests/PHP/LowercasePHPFunctionsUnitTest.inc

@@ -39,3 +39,5 @@ $callToNamespacedFunction = MyNamespace /* phpcs:ignore Standard */ \STR_REPEAT(
 $callToNamespacedFunction = namespace\STR_REPEAT($a, 2); // Could potentially be false negative.
 
 $filePath = new \File($path);
+
+$count = $object?->Count();

src/Standards/Squiz/Tests/PHP/LowercasePHPFunctionsUnitTest.inc.fixed

@@ -39,3 +39,5 @@ $callToNamespacedFunction = MyNamespace /* phpcs:ignore Standard */ \STR_REPEAT(
 $callToNamespacedFunction = namespace\STR_REPEAT($a, 2); // Could potentially be false negative.
 
 $filePath = new \File($path);
+
+$count = $object?->Count();