Epic #61834: Create future proof Content Element with strong default
Remove TCA definitions for pre FAL fields running in compat version mode
There are some overrides in the CMS extension that provide the old TCA for the image and media fields of tt_content and pages_language_overlay tables. These apply if the compat version is set to 6.0 and and FAL upgrade wizard is not yet run.
Those can be removed now as we only support migrations from one LTS to the next LTS now.