Hides Spaces actions in serverless saved objects management (#169457)

Closes #169424

## Summary

Adds check against `SpacesApi.hasOnlyDefaultSpace` to, when true, bypass
registering the `share-to-space` and `copy-to-space` actions and the
`Spaces` column in the saved objects management UI.

### Manual Testing
- Start Elasticsearch with `yarn es serverless`
- Start Kibana with `yarn start --serverless security`
- Navigate to `Project Settings`->`Management`->`Content` -> `Saved
Objects`
- Verify that the `Spaces` column does not appear in the Saved Objects
table
- Verify that the `Actions` column does not contain either the
`Copy-to-space` or `Share-to-space` actions for any object (will still
contain `Inspect` and `View relationships`)
- Stop Kibana and Elasticsearch
- Start Elasticsearch with `yarn es snapshot --license=trial`
- Start Kibana with `yarn start`
- Add sample flight data to generate some saved objects
- Navigate to `Stack Management`->`Kibana`->`Saved Objects`
- Verify that the `Spaces` column does appear in the Saved Objects table
- Verify that the `Actions` column does contain both the `Copy-to-space`
or `Share-to-space` actions for applicable object types (e.g. data
views)

### Automated Testing 
-
src/plugins/saved_objects_management/public/services/action_service.test.ts
-
src/plugins/saved_objects_management/public/services/column_service.test.ts

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

src/plugins/saved_objects_management/public/services/action_service.test.ts

@@ -64,6 +64,18 @@ describe('SavedObjectsManagementActionRegistry', () => {
         `"Saved Objects Management Action with id 'my-action' already exists"`
       );
     });
+
+    it('does not register spaces share and copy actions when SpacesApi.hasOnlyDefaultSpace is true', () => {
+      const action = createAction('foo');
+      setup.register(action);
+      const start = service.start(spacesPluginMock.createStartContract(true));
+      expect(start.getAll()).toEqual(
+        expect.not.arrayContaining([
+          expect.any(ShareToSpaceSavedObjectsManagementAction),
+          expect.any(CopyToSpaceSavedObjectsManagementAction),
+        ])
+      );
+    });
   });
 
   describe('#has', () => {

src/plugins/saved_objects_management/public/services/action_service.ts

@@ -46,7 +46,7 @@ export class SavedObjectsManagementActionService {
   }
 
   start(spacesApi?: SpacesApi): SavedObjectsManagementActionServiceStart {
-    if (spacesApi) {
+    if (spacesApi && !spacesApi.hasOnlyDefaultSpace) {
       registerSpacesApiActions(this, spacesApi);
     }
     return {

src/plugins/saved_objects_management/public/services/column_service.test.ts

@@ -58,5 +58,14 @@ describe('SavedObjectsManagementColumnRegistry', () => {
         `"Saved Objects Management Column with id 'my-column' already exists"`
       );
     });
+
+    it('does not register space column when SpacesApi.hasOnlyDefaultSpace is true', () => {
+      const column = createColumn('foo');
+      setup.register(column);
+      const start = service.start(spacesPluginMock.createStartContract(true));
+      expect(start.getAll()).toEqual(
+        expect.not.arrayContaining([expect.any(ShareToSpaceSavedObjectsManagementColumn)])
+      );
+    });
   });
 });

src/plugins/saved_objects_management/public/services/column_service.ts

@@ -39,7 +39,7 @@ export class SavedObjectsManagementColumnService {
   }
 
   start(spacesApi?: SpacesApi): SavedObjectsManagementColumnServiceStart {
-    if (spacesApi) {
+    if (spacesApi && !spacesApi.hasOnlyDefaultSpace) {
       registerSpacesApiColumns(this, spacesApi);
     }
     return {

x-pack/plugins/spaces/public/mocks.ts

@@ -11,11 +11,11 @@ import type { SpacesPluginStart } from './plugin';
 import type { SpacesApi } from './types';
 import type { SpacesApiUi, SpacesApiUiComponent } from './ui_api';
 
-const createApiMock = (): jest.Mocked<SpacesApi> => ({
+const createApiMock = (hasOnlyDefaultSpace: boolean): jest.Mocked<SpacesApi> => ({
   getActiveSpace$: jest.fn().mockReturnValue(of()),
   getActiveSpace: jest.fn(),
   ui: createApiUiMock(),
-  hasOnlyDefaultSpace: false,
+  hasOnlyDefaultSpace,
 });
 
 type SpacesApiUiMock = Omit<jest.Mocked<SpacesApiUi>, 'components'> & {
@@ -48,7 +48,9 @@ const createApiUiComponentsMock = () => {
   return mock;
 };
 
-const createStartContract = (): jest.Mocked<SpacesPluginStart> => createApiMock();
+const createStartContract = (
+  hasOnlyDefaultSpace: boolean = false
+): jest.Mocked<SpacesPluginStart> => createApiMock(hasOnlyDefaultSpace);
 
 export const spacesPluginMock = {
   createStartContract,