[BUGFIX] Respect TYPO3_REQUEST in framework state (#518)

Resolves: #517

Classes/Core/Functional/Framework/FrameworkState.php

@@ -51,6 +51,7 @@ public static function push()
         // different. And code that runs after that within the test scope may fail (eg. the referenceIndex check in tearDown() that
         // relies on TCA). So we back up TCA for now before executing frontend tests.
         $state['globals-tca'] = $GLOBALS['TCA'];
+        $state['request'] = $GLOBALS['TYPO3_REQUEST'] ?? null;
 
         // Can be dropped when GeneralUtility::getIndpEnv() is abandoned
         $generalUtilityReflection = new \ReflectionClass(GeneralUtility::class);
@@ -68,6 +69,7 @@ public static function push()
     public static function reset()
     {
         unset($GLOBALS['BE_USER']);
+        unset($GLOBALS['TYPO3_REQUEST']);
 
         $generalUtilityReflection = new \ReflectionClass(GeneralUtility::class);
         $generalUtilityIndpEnvCache = $generalUtilityReflection->getProperty('indpEnvCache');
@@ -92,6 +94,7 @@ public static function pop()
         }
 
         $GLOBALS['TCA'] = $state['globals-tca'];
+        $GLOBALS['TYPO3_REQUEST'] = $state['request'];
 
         $generalUtilityReflection = new \ReflectionClass(GeneralUtility::class);
         $generalUtilityIndpEnvCache = $generalUtilityReflection->getProperty('indpEnvCache');