[BUGFIX] Inline references are bound to versioned page

When modifying inline child elements that belong to a page
as parent record in a workspace, the pid values of these
inline children are bound to the page version instead of
the according counterpart (real record or placeholder)
of the live workspace.

Change-Id: I113b5c36672e767d4151f8a41ff9c5fa20b11877
Resolves: #80663
Releases: master, 7.6
Reviewed-on: https://review.typo3.org/52342


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>