Merge branch 'himkp-improve-tables-ce' into 'master'

Improve table editing in content editor

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/121371



Merged-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Approved-by: Tomas Vik <tvik@gitlab.com>
Approved-by: Kevin Comoli <kcomoli@gitlab.com>
Approved-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Reviewed-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Co-authored-by: Himanshu Kapoor <hkapoor@gitlab.com>