Disable URL Preview setting if disabled on the homeserver (#33279)

* Disallow URL Previews if disabled by homeserver.

* Cleanup nonsense

* cleanup

* cleanup

* fixes

* Remove import

* Add an error handler

* cleanup

apps/web/test/test-utils/client.ts

@@ -132,6 +132,7 @@ export const mockClientMethodsServer = (): Partial<Record<MethodLikeKeys<MatrixC
     getIdentityServerUrl: jest.fn(),
     getHomeserverUrl: jest.fn(),
     getCapabilities: jest.fn().mockResolvedValue({}),
+    getCachedCapabilities: jest.fn().mockResolvedValue({}),
     getClientWellKnown: jest.fn().mockReturnValue({}),
     waitForClientWellKnown: jest.fn().mockResolvedValue({}),
     doesServerSupportUnstableFeature: jest.fn().mockResolvedValue(false),

apps/web/test/test-utils/test-utils.ts

@@ -249,6 +249,7 @@ export function createTestClient(): MatrixClient {
         decryptEventIfNeeded: () => Promise.resolve(),
         isUserIgnored: jest.fn().mockReturnValue(false),
         getCapabilities: jest.fn().mockResolvedValue({}),
+        getCachedCapabilities: jest.fn().mockReturnValue({}),
         supportsThreads: jest.fn().mockReturnValue(false),
         supportsIntentionalMentions: jest.fn().mockReturnValue(false),
         getRoomUpgradeHistory: jest.fn().mockReturnValue([]),