[Bug] Controlled Documents - "New category" crashes on self-hosted v0.7.413

## Environment

- Huly version: v0.7.413 (also reproduced on v0.7.382)
- Deployment: Self-hosted (Docker Compose)
- Database: CockroachDB
- Role: OWNER

## Steps to reproduce

1. Open Controlled Documents module
2. Click dropdown next to "+ New document"
3. Click "New category"

## Expected behavior

Category creation dialog opens.

## Actual behavior

App crashes / bounces back to previous page.

## Console errors

1. `navigation.ts:44 Could not find document categories.`
2. Multiple warnings during client initialization:

```
context.js:63 no document found, failed to apply model transaction, skipping
_class="core:class:TxUpdateDoc"
```

(~20 occurrences with different objectIds, also TxRemoveDoc)

3. Exclude plugin list includes `server-documents:10`

## Additional context

- Upgraded from v0.7.382 to v0.7.413, issue persists on both versions.
- Full stack restart (docker compose down / up) did not resolve.
- MIGRATION.md confirms no manual changes required between these versions.
- Workspace service logs show no errors, starts normally with model version 0.7.343.