[BUGFIX] Fix foreach array used as variabele in TranslationServiceTest

Also fix method call to flushData with an array as arguments which
should be a string.

Resolves: #94789
Releases: master
Change-Id: I19ef0f8d9b0c008b4036a2e08b674e71082cba84
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70406


Tested-by: core-ci <typo3@b13.com>
Tested-by: Roman Büchler <info@buechler.pro>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Roman Büchler <info@buechler.pro>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/form/Tests/Unit/Service/TranslationServiceTest.php

@@ -1034,10 +1034,10 @@ class TranslationServiceTest extends UnitTestCase
 
         $expected = 'form-element-identifier ADDITIONAL LABEL EN';
 
-        $this->store->flushData($formRuntimeXlfPaths);
+        $this->store->flushData($formRuntimeXlfPaths[0]);
 
-        foreach ($textElementXlfPaths as $textElementXlfPaths) {
-            $this->store->flushData($textElementXlfPaths);
+        foreach ($textElementXlfPaths as $textElementXlfPath) {
+            $this->store->flushData($textElementXlfPath);
         }
 
         $mockFormElement = $this->getAccessibleMock(GenericFormElement::class, ['dummy'], [], '', false);