CommandMenuItem overridable entity (#21486)

## Context
Second PR of the overridable-entities track (after #21436 for views):
command menu items become overridable so that edits on non-owned items
are stored as overrides instead of mutating the row, and
deletion/deactivation becomes reversible.

 ## What this does

- `CommandMenuItemEntity` now extends
`OverridableEntity<CommandMenuItemOverrides>` (adds `isActive` +
`overrides`). All editable properties are overridable for now (to
discuss).
- **Update**: mutations on a command item not owned by the caller
(standard items) are written into `overrides`; reads merge them in the
DTO. The command palette edit mode (pin,
reorder, shortLabel) now preserves standard values, "Reset label to
default" gains true post-save semantics.
- **Delete**: protected items are deactivated (`isActive = false`)
instead of deleted; custom items still hard-delete.
- **Object deactivate/enable toggle**: now flips `isActive` on the
command item (merged into the main migration call) instead of
delete/recreate; a create-if-missing fallback covers legacy deactivated
objects.
- **Front**: inactive command items are filtered out of the palette
selector.


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Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/database/commands/upgrade-version-command/instance-commands.constant.ts

@@ -64,6 +64,7 @@ import { DropEmailingDomainDriverColumnFastInstanceCommand } from 'src/database/
 import { ViewOverridableEntityFastInstanceCommand } from 'src/database/commands/upgrade-version-command/2-12/2-12-instance-command-fast-1781114009075-view-overridable-entity';
 import { RenameIsUiReadOnlyToIsUiEditableFastInstanceCommand } from 'src/database/commands/upgrade-version-command/2-13/2-13-instance-command-fast-1781277453604-rename-is-ui-read-only-to-is-ui-editable';
 import { BackfillNonUiCreatableStandardSystemObjectsSlowInstanceCommand } from 'src/database/commands/upgrade-version-command/2-13/2-13-instance-command-slow-1781277480000-backfill-non-ui-creatable-standard-system-objects';
+import { CommandMenuItemOverridableEntityFastInstanceCommand } from 'src/database/commands/upgrade-version-command/2-13/2-13-instance-command-fast-1781253016028-command-menu-item-overridable-entity';
 
 export const INSTANCE_COMMANDS = [
   AddViewFieldGroupIdIndexOnViewFieldFastInstanceCommand,
@@ -130,4 +131,5 @@ export const INSTANCE_COMMANDS = [
   ViewOverridableEntityFastInstanceCommand,
   RenameIsUiReadOnlyToIsUiEditableFastInstanceCommand,
   BackfillNonUiCreatableStandardSystemObjectsSlowInstanceCommand,
+  CommandMenuItemOverridableEntityFastInstanceCommand,
 ];