fix(webrtc): handle client connection errors gracefully (#2173)

- add deferred function to close the client connection on error
- ensure proper cleanup for all client functions

internal/webrtc/kinesis.go

@@ -68,6 +68,12 @@ func kinesisClient(
 		return nil, err
 	}
 
+	defer func() {
+		if err != nil {
+			_ = pc.Close()
+		}
+	}()
+
 	// protect from sending ICE candidate before Offer
 	var sendOffer core.Waiter