[TASK] Use a Identity Map for Record objects

When loading Record objects, and we use Relations
in one of the next patches, the main issue will
be that we might run in recursions when fetching
relations. This can be resolved by re-using created
Record objects by utilizing the
Identity Map pattern (https://en.wikipedia.org/wiki/Identity_map_pattern)
which keeps track (context-wise) of the loaded
records.

In a way to unify this logic, the "RecordRememeberer"
for Page Module has now been removed as this
is the exact purpose of the Identity Map.

The next step is to actually utilize the Record
API in the Page module replacing arrays there completely.

Resolves: #104367
Related: #103783
Releases: main
Change-Id: Idd56a49c421fd722ed35eedded365420a7479bea
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/85047


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>