This PR fixes many bugs related to creating a record from inside a relation picker, single or multiple. QA video : Part 1 : https://github.com/user-attachments/assets/35450b08-ff84-4698-8318-681d72437cd4 Part 2 : https://github.com/user-attachments/assets/807c3a7b-4116-41ff-b9a0-23767452b631 Also : - Refactored `RecordDetailRelationSectionDropdown` to split it into two components to avoid too many ternaries inside functions. Fixes https://github.com/twentyhq/twenty/issues/12668 Fixes https://github.com/twentyhq/twenty/issues/12669 Fixes https://github.com/twentyhq/twenty/issues/12670 Fixes https://github.com/twentyhq/twenty/issues/12671