fix: record group issues

[magrinj]

This PR is fixing the following issues with record groups:

• [x] [Backend] - Only update view groups when a field is edited if this one already has view groups
• [x] [Backend] - Editing a Select field metadata option brake view groups
• [x] [Frontend] - Changing the group by field from one to another brake record group and doesn't remove the previous ones
• [x] [Frontend & Backend] - Mark kanbanFieldMetadataId as deprecated in favour of viewGroups.fieldMetadataId

Also the following has been checked:

• [x] Properly displayed a table with only one view groups
• [x] Properly displayed a table without view groups