[TASK] Use direct array assignments instead of array_push

[TASK] Use direct array assignments instead of array_push

Direct assignments are usually 2x faster and often more readable
when pushing one value only.

Releases: master
Fixes: #80283
Change-Id: I16fc1938f74550d1a3d9f9c0cbafe85dc2ff1c5b
Reviewed-on: https://review.typo3.org/52049
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>