[BUGFIX] Do not compile parent config in inline ajax controller

Using the signed parent tca config incoming via ajax request in the
inline ajax controller solves a series of issues in 'new' and other
scopes.
The expensive calculation of inline parent TCA config within the
controller can be dropped.

Change-Id: I4ff31d0398ebfa1bb311bbe6ea97c839aa2df1ac
Resolves: #80325
Resolves: #76671
Releases: master
Reviewed-on: https://review.typo3.org/52077


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Tobi Kretschmann <tobi@tobishome.de>
Tested-by: Tobi Kretschmann <tobi@tobishome.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>