refactor: Consolidate WorkflowService.getMany() (no-changelog) (#6892)

In scope:

- Consolidate `WorkflowService.getMany()`.
- Support non-entity field `ownedBy` for `select`.
- Support `tags` for `filter`.
- Move `addOwnerId` to `OwnershipService`.
- Remove unneeded check for `filter.id`.
- Simplify DTO validation for `filter` and `select`.
- Expand tests for `GET /workflows`.

Workflow list query DTOs:

```
filter → name, active, tags
select → id, name, active, tags, createdAt, updatedAt, versionId, ownedBy
```

Out of scope:

- Migrate `shared_workflow.roleId` and `shared_credential.roleId` to
string IDs.
- Refactor `WorkflowHelpers.getSharedWorkflowIds()`.

packages/cli/src/workflows/workflows.controller.ts

@@ -14,7 +14,7 @@ import { WorkflowEntity } from '@db/entities/WorkflowEntity';
 import { validateEntity } from '@/GenericHelpers';
 import { ExternalHooks } from '@/ExternalHooks';
 import { getLogger } from '@/Logger';
-import type { ListQueryRequest, WorkflowRequest } from '@/requests';
+import type { ListQuery, WorkflowRequest } from '@/requests';
 import { isBelowOnboardingThreshold } from '@/WorkflowHelpers';
 import { EEWorkflowController } from './workflows.controller.ee';
 import { WorkflowsService } from './workflows.services';
@@ -118,9 +118,14 @@ workflowsController.post(
 workflowsController.get(
 	'/',
 	listQueryMiddleware,
-	async (req: ListQueryRequest, res: express.Response) => {
+	async (req: ListQuery.Request, res: express.Response) => {
 		try {
-			const [data, count] = await WorkflowsService.getMany(req.user, req.listQueryOptions);
+			const sharedWorkflowIds = await WorkflowHelpers.getSharedWorkflowIds(req.user, ['owner']);
+
+			const { workflows: data, count } = await WorkflowsService.getMany(
+				sharedWorkflowIds,
+				req.listQueryOptions,
+			);
 
 			res.json({ count, data });
 		} catch (maybeError) {