Add backfill installation feature for pre-installed apps (#22199)

## After

<img width="1070" height="514" alt="image"
src="https://github.com/user-attachments/assets/9cbd2ff5-1678-4c2f-84da-074568f37c51"
/>


## Summary
Adds the ability to backfill application installations across all
existing workspaces. This allows admins to retroactively install a
pre-registered application on every active and suspended workspace
through a background job, making the feature idempotent and
non-blocking.

## Key Changes

- **Backend Service**: Added `backfillApplicationOnAllWorkspaces()`
method to `PreInstalledAppsService` that:
  - Validates the application registration exists
  - Iterates through all workspaces using `WorkspaceIteratorService`
  - Installs the app on each workspace
  - Swallows `APP_ALREADY_INSTALLED` errors for idempotency
  - Logs success/failure counts

- **Background Job**: Created `BackfillApplicationInstallationJob` to
process backfill requests asynchronously via the message queue

- **GraphQL Mutation**: Added `backfillApplicationInstallation` mutation
to `AdminPanelResolver` that:
  - Validates the application registration exists
  - Enqueues the background job
  - Returns immediately without blocking the request

- **UI Components**: Enhanced
`SettingsAdminApplicationRegistrationGeneralToggles` with:
- New "Pre-install on new workspaces" toggle for the `isPreInstalled`
flag
  - "Backfill on all workspaces" button with confirmation modal
  - Loading state and success/error snack bar feedback

- **Data Model**: Added `isPreInstalled` field to
`UpdateApplicationRegistrationPayload` input type

- **Tests**: Added comprehensive unit tests for
`PreInstalledAppsService.backfillApplicationOnAllWorkspaces()` covering:
  - Missing registration validation
  - Successful multi-workspace installation
  - Idempotent handling of already-installed errors
  - Proper error propagation for unexpected failures

## Implementation Details

The backfill operation is designed to be:
- **Idempotent**: Already-installed apps are skipped without error
- **Non-blocking**: Runs as a background job via message queue
- **Resilient**: Per-workspace failures don't block other installations
- **Observable**: Logs aggregated success/failure counts for monitoring


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Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

packages/twenty-server/src/engine/core-modules/message-queue/jobs.module.ts

@@ -12,6 +12,8 @@ import { UpdateSubscriptionQuantityJob } from 'src/engine/core-modules/billing/j
 import { BillingReminderModule } from 'src/engine/core-modules/billing/reminders/billing-reminder.module';
 import { BillingReminderCronJob } from 'src/engine/core-modules/billing/reminders/crons/billing-reminder.cron.job';
 import { StripeModule } from 'src/engine/core-modules/billing/stripe/stripe.module';
+import { BackfillApplicationInstallationJob } from 'src/engine/core-modules/application/jobs/backfill-application-installation.job';
+import { PreInstalledAppsModule } from 'src/engine/core-modules/application/pre-installed-apps/pre-installed-apps.module';
 import { EmailSenderJob } from 'src/engine/core-modules/email/email-sender.job';
 import { EmailModule } from 'src/engine/core-modules/email/email.module';
 import { EmailingModule } from 'src/modules/emailing/emailing.module';
@@ -85,6 +87,7 @@ import { WorkflowModule } from 'src/modules/workflow/workflow.module';
     LogicFunctionModule,
     EnterpriseModule,
     EmailingModule,
+    PreInstalledAppsModule,
     BillingReminderModule,
   ],
   providers: [
@@ -99,6 +102,7 @@ import { WorkflowModule } from 'src/modules/workflow/workflow.module';
     CleanWorkspaceDeletionWarningUserVarsJob,
     UpdateWorkspaceMemberEmailJob,
     GenerateSdkClientJob,
+    BackfillApplicationInstallationJob,
   ],
 })
 export class JobsModule {