Add record page layout tabs editing (#18702)

- Fix duplication of tabs in dashboards that didn't open the duplicated
tab in the side panel: replaced the logic that used Math.round with an
algorithm that switches the positions of the elements. We will keep
relying on integers, but it will work well in all cases.
- Make dnd work with record page layouts, where there is a pinned tab
- Make tab movements work with pinned tab, too
- Allow user to set a tab as the pinned tab
- Make backend changes to be able to save tabs with `layoutMode`



https://github.com/user-attachments/assets/ce1130fa-71df-49ba-ba2f-6f971e15dd49

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

packages/twenty-server/src/engine/workspace-manager/dev-seeder/core/utils/seed-feature-flags.util.ts

@@ -1,5 +1,5 @@
-import { type QueryRunner } from 'typeorm';
 import { FeatureFlagKey } from 'twenty-shared/types';
+import { type QueryRunner } from 'typeorm';
 
 const tableName = 'featureFlag';
 
@@ -105,6 +105,11 @@ export const seedFeatureFlags = async ({
         workspaceId: workspaceId,
         value: true,
       },
+      {
+        key: FeatureFlagKey.IS_RECORD_PAGE_LAYOUT_GLOBAL_EDITION_ENABLED,
+        workspaceId: workspaceId,
+        value: true,
+      },
     ])
     .execute();
 };