[BUGFIX] Move TCA modification of EXT:cms to TCA/Overrides.

TCA manipulation code must no longer reside in ext_tables.php, but
moved to Configuration/TCA/Overrides/<tablename>.php. Leftovers
in ext_tables might disturb loading order of TCA changes and spoil
proper caching.

Change-Id: Idb1be39c754d5566e52623103477b94887077cdb
Resolves: #59463
Related: #59414
Releases: 6.3, 6.2
Reviewed-on: https://review.typo3.org/30648
Reviewed-by: Susanne Moog
Tested-by: Susanne Moog
Reviewed-by: Sebastian Fischer
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
(cherry picked from commit 57b9fd213897663b4c12d025375a8564cb7d60b2)
Reviewed-on: https://review.typo3.org/31343
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
[BUGFIX] Move TCA modification of EXT:t3editor to TCA/Overrides

TCA manipulation code must no longer reside in ext_tables.php, but
moved to Configuration/TCA/Overrides/<tablename>.php. Leftovers
in ext_tables might disturb loading order of TCA changes and spoil
proper caching.

Change-Id: I1f92a7b536ffb19d30bb580ea30452fc488cd0f6
Resolves: #59705
Related: #59414
Releases: 6.3, 6.2
Reviewed-on: https://review.typo3.org/31342
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring