TASK: Remove obsolete REBASE_ERROR content stream state

Via #4965 the status REBASE_ERROR is obsolete.
Instead of still using this status on replay we mimic the new logic:
> In case of a [rebase error}, reopen the old content stream and remove the newly created

Additionally, to not break `findContentStreams` when fetching all content streams we make sure that the streams with `REBASE_ERROR` are transformed to `NO_LONGER_IN_USE` so they can be cleaned up.

Related neos/neos-development-collection#5101

Classes/Service/ContentStreamPruner.php

@@ -37,16 +37,16 @@ public function __construct(
      *       To remove the deleted Content Streams,
      *       call {@see ContentStreamPruner::pruneRemovedFromEventStream()} afterwards.
      *
-     * By default, only content streams in STATE_NO_LONGER_IN_USE and STATE_REBASE_ERROR will be removed.
+     * By default, only content streams that are NO_LONGER_IN_USE will be removed.
      * If you also call with $removeTemporary=true, will delete ALL content streams which are currently not assigned
-     * to a workspace (f.e. dangling ones in FORKED or CREATED.).
+     * to a workspace (f.e. dangling ones in FORKED, CLOSED or CREATED.).
      *
      * @param bool $removeTemporary if TRUE, will delete ALL content streams not bound to a workspace
      * @return iterable<int,ContentStreamId> the identifiers of the removed content streams
      */
     public function prune(bool $removeTemporary = false): iterable
     {
-        $status = [ContentStreamStatus::NO_LONGER_IN_USE, ContentStreamStatus::REBASE_ERROR];
+        $status = [ContentStreamStatus::NO_LONGER_IN_USE];
         if ($removeTemporary) {
             $status[] = ContentStreamStatus::CREATED;
             $status[] = ContentStreamStatus::FORKED;

Classes/SharedModel/Workspace/ContentStreamStatus.php

@@ -39,14 +39,6 @@ enum ContentStreamStatus: string implements \JsonSerializable
      */
     case IN_USE_BY_WORKSPACE = 'IN_USE_BY_WORKSPACE';
 
-    /**
-     * a workspace was tried to be rebased, and during the rebase an error occured. This is the content stream
-     * which contains the errored state - so that we can recover content from it (probably manually)
-     *
-     * @deprecated legacy status, FIXME clean up! https://github.com/neos/neos-development-collection/issues/5101
-     */
-    case REBASE_ERROR = 'REBASE_ERROR';
-
     /**
      * the content stream was closed and must no longer accept new events
      */