Fix deserialize of TABL with foreign keys (#3945)
Fix deserialize of TABL with foreign keys (#3945)

Activation of foreign keys now uses with same logic as #3545:
- remove keys during DDIC phase
- add keys during LATE phase

Closes #3867

Co-authored-by: Lars Hvam <721d1b171982cd84b755f6b25130d2b88cd1f696@hotmail.com>
EduardoCopat/abapGit,sbcgua/abapGit,EduardoCopat/abapGit,sbcgua/abapGit,larshp/abapGit,larshp/abapGit