[BUGFIX] Also consider new placeholders in WorkspaceService

The WorkspaceService->fetchPagesWithVersionsInTable()
method is used to fetch all pages, which contain versioned
records. This is e.g. used for highlighting the page tree.

Since new records (created in a workspace) do not hold
a t3ver_oid, they were previously not considered in the
corresponding database query.

This is now fixed by also checking the t3ver_state for
the new placeholder flag.

Resolves: #94931
Related: #92791
Related: #92497
Releases: main, 11.5
Change-Id: Ib40662aa6016c33b3047e1172ad4c1012e72d81c
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73343


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>