[BUGFIX] Do not index translations on default language in languages f…

…ree mode

With fallbackType: free the index queue contains an entry for each available language. Without this check all the entries are additionally indexed in the default language. They should be only indexed for the language, the record has defined as sys_language_uid.

Fixes #3560
Ports: #3785

Classes/IndexQueue/Indexer.php

@@ -264,6 +264,14 @@ protected function getItemRecordOverlayed(Item $item, int $language): ?array
         ) {
             return null;
         }
+        // skip translated records for default language within "free content mode"-languages
+        if ($language === 0
+            && isset($languageField)
+            && (int)($itemRecord[$languageField] ?? null) !== $language
+            && $this->isLanguageInAFreeContentMode($item, (int)($itemRecord[$languageField] ?? null))
+        ) {
+            return null;
+        }
 
         $pidToUse = $this->getPageIdOfItem($item);