feat: implement CORS proxy for Matrix homeservers during development and refactor call handling logic

src/app/features/call/CallService.ts

@@ -328,6 +328,7 @@ export class CallService {
       // Step 2: Try fetching LiveKit JWT from homeservers in priority order
       const result = await fetchLiveKitJWTFromServers(
         homeserverPriority,
+        this.config.homeserverBaseUrl,
         roomId,
         this.config.userId,
         this.config.deviceId,