[TASK] Partially revert method signature change for FileInterface->rename

This is a pre-patch for introducing a native enum for
DuplicationBehavior. In order to prevent changes to the signature of
`$conflictMode` two times, we omit the typehint `string` in v13 and will
change it in v14 immediately to native enum `DuplicationBehavior`.

Resolves: #102149
Related: #101294
Releases: main
Change-Id: I536151486b21f72bd2bc3959fc74e1124552af50
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81415


Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Thomas Hohn <tho@gyldendal.dk>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Thomas Hohn <tho@gyldendal.dk>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>

typo3/sysext/core/Classes/Resource/AbstractFile.php

@@ -479,7 +479,7 @@ abstract class AbstractFile implements FileInterface
      * @param non-empty-string $newName The new file name
      * @param DuplicationBehavior::* $conflictMode
      */
-    public function rename(string $newName, string $conflictMode = DuplicationBehavior::RENAME): FileInterface
+    public function rename(string $newName, $conflictMode = DuplicationBehavior::RENAME): FileInterface
     {
         if ($this->deleted) {
             throw new \RuntimeException('File has been deleted.', 1329821482);

typo3/sysext/core/Classes/Resource/FileInterface.php

@@ -114,7 +114,7 @@ interface FileInterface extends ResourceInterface
      * @param non-empty-string $newName The new file name
      * @param DuplicationBehavior::* $conflictMode
      */
-    public function rename(string $newName, string $conflictMode = DuplicationBehavior::RENAME): FileInterface;
+    public function rename(string $newName, $conflictMode = DuplicationBehavior::RENAME): FileInterface;
 
     /*****************
      * SPECIAL METHODS

typo3/sysext/core/Classes/Resource/FileReference.php

@@ -394,7 +394,7 @@ class FileReference implements FileInterface
      * @param non-empty-string $newName The new file name
      * @param DuplicationBehavior::* $conflictMode
      */
-    public function rename(string $newName, string $conflictMode = DuplicationBehavior::RENAME): FileInterface
+    public function rename(string $newName, $conflictMode = DuplicationBehavior::RENAME): FileInterface
     {
         // @todo Implement this function. This should only rename the
         // FileReference (sys_file_reference) record, not the file itself.