feat: Add filter button to objects table and enable system objects access (#15856)

## Summary
This PR replaces the Active/Inactive accordion sections with a modern
filter dropdown button and enables full access to system objects in
advanced mode.

## Changes

### UI Improvements
- ✅ Replaced accordion sections with a filter button dropdown (matching
the design pattern from the Group filter)
- ✅ Added 'Deactivated' toggle filter (hidden by default, uses
IconArchive)
- ✅ Added 'System objects' toggle filter (only visible in advanced mode,
uses IconSettings)
- ✅ Fixed search input width to properly fill available space
- ✅ Proper button sizing and alignment

### System Objects Support
- ✅ Made system objects visible when 'System objects' filter is toggled
on
- ✅ System objects are now fully clickable and accessible
- ✅ Updated object detail page to support system objects
- ✅ Updated field creation/edit pages to support system objects
- ✅ System objects can now have custom fields added

### Architecture
- ✅ Implemented scalable filter architecture using a single filtered
list
- ✅ Easy to add more filters in the future (e.g., show remote objects)
- ✅ All filters work independently and can be combined

## Testing
- [x] Tested deactivated objects toggle
- [x] Tested system objects toggle (only shows in advanced mode)
- [x] Tested clicking on system objects
- [x] Tested adding custom fields to system objects
- [x] No linter errors

## Screenshots
See attached screenshots in the conversation for the new filter UI.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds a filter dropdown to the Settings Objects table (incl.
deactivated/system toggles), enables system objects across
settings/field flows, seeds core views (workspace members, messages,
threads, calendar events), and adds actions for Workspace Members.
> 
> - **Settings UI**
> - **Objects Table**: Replaces Active/Inactive sections with a single
filterable list and dropdown (`Deactivated`, `System objects` in
advanced mode); updates props to `objectMetadataItems` and removes
accordion sections.
> - **Search/UX**: Search input fills available space; inactive rows
show activation/delete menu; active rows remain navigable.
> - **Pages Updated**: `SettingsObjects`,
`SettingsApplicationDetailContentTab` switch to new table API; object
detail and new-field flows use `findObjectMetadataItemByNamePlural`
(works with system objects).
> - **Action Menu**
> - **Workspace Members**: Adds `WORKSPACE_MEMBERS_ACTIONS_CONFIG` with
"Manage members in settings" action; wired into `getActionConfig` for
`WorkspaceMember`.
> - **Server (Core Views Seed)**
> - Adds default views: `workspaceMembersAllView`, `messagesAllView`,
`messageThreadsAllView`, `calendarEventsAllView`; included in
`prefillCoreViews`.
> - Marks workflow entities as system (`WorkflowRun`,
`WorkflowVersion`).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
6a2856df85104665bd986cc63f2d54f19bf668d0. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

packages/twenty-server/src/modules/workflow/common/standard-objects/workflow-run.workspace-entity.ts

@@ -2,9 +2,9 @@ import { registerEnumType } from '@nestjs/graphql';
 
 import { msg } from '@lingui/core/macro';
 import {
+  ActorMetadata,
   FieldMetadataType,
   RelationOnDeleteAction,
-  ActorMetadata,
 } from 'twenty-shared/types';
 import { type WorkflowRunStepInfos } from 'twenty-shared/workflow';
 
@@ -92,6 +92,7 @@ export const SEARCH_FIELDS_FOR_WORKFLOW_RUNS: FieldTypeAndNameMetadata[] = [
   labelIdentifierStandardId: WORKFLOW_RUN_STANDARD_FIELD_IDS.name,
   icon: STANDARD_OBJECT_ICONS.workflowRun,
 })
+@WorkspaceIsSystem()
 @WorkspaceIsNotAuditLogged()
 @WorkspaceIsObjectUIReadOnly()
 export class WorkflowRunWorkspaceEntity extends BaseWorkspaceEntity {

packages/twenty-server/src/modules/workflow/common/standard-objects/workflow-version.workspace-entity.ts

@@ -80,6 +80,7 @@ export const SEARCH_FIELDS_FOR_WORKFLOW_VERSIONS: FieldTypeAndNameMetadata[] = [
   icon: STANDARD_OBJECT_ICONS.workflowVersion,
   labelIdentifierStandardId: WORKFLOW_VERSION_STANDARD_FIELD_IDS.name,
 })
+@WorkspaceIsSystem()
 @WorkspaceIsObjectUIReadOnly()
 export class WorkflowVersionWorkspaceEntity extends BaseWorkspaceEntity {
   @WorkspaceField({