[FEATURE] Make use of .t3-table in EXT: tstemplate

Use table.t3-table of #52558 in EXT: tstemplate.

Change-Id: I7b01427f8761c951df7ecf62cbeb0e307d325c84
Resolves: #52561
Related: #49592
Releases: 6.2
Reviewed-on: https://review.typo3.org/24428
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn