Test that the local user can see their own screen share

To make this test work I had to extend the mocking of the CallViewModel tests to make a local connection object exist.

src/utils/test.ts

@@ -74,6 +74,8 @@ import {
   createRemoteScreenShare,
   type RemoteScreenShareViewModel,
 } from "../state/media/RemoteScreenShareViewModel";
+import { Connection } from "../state/CallViewModel/remoteMembers/Connection";
+import { type SFUConfig } from "../livekit/openIDSFU";
 
 export function withFakeTimers(continuation: () => void): void {
   vi.useFakeTimers();
@@ -210,6 +212,13 @@ export const exampleTransport: LivekitTransport = {
   livekit_alias: "!alias:example.org",
 };
 
+export const exampleSfuConfig: SFUConfig = {
+  jwt: "foo",
+  livekitAlias: "bar",
+  livekitIdentity: "baz",
+  url: "bro",
+};
+
 export function mockRtcMembership(
   user: string | RoomMember,
   deviceId: string,
@@ -564,3 +573,8 @@ export function mockMuteStates(
     videoEnabled: false,
   });
 }
+
+export class MockConnection extends Connection {
+  public async start(): Promise<void> {}
+  public async stop(): Promise<void> {}
+}