Blur participant videos when calls are reconnecting

ts/util/callingIsReconnecting.ts

@@ -0,0 +1,18 @@
+// Copyright 2023 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import {
+  CallMode,
+  CallState,
+  GroupCallConnectionState,
+} from '../types/Calling';
+import type { ActiveCallType } from '../types/Calling';
+
+export function isReconnecting(activeCall: ActiveCallType): boolean {
+  return (
+    (activeCall.callMode === CallMode.Group &&
+      activeCall.connectionState === GroupCallConnectionState.Reconnecting) ||
+    (activeCall.callMode === CallMode.Direct &&
+      activeCall.callState === CallState.Reconnecting)
+  );
+}