Make E2EEConfig required

Previously it could be either undefined or type None which meant the
same thing: no need to have both, just make it required.

This also means we can move the line to set e2ee enabled into a more
sensible place rather than in the ActiveCall de-nulling wrapper.

src/room/GroupCallView.tsx

@@ -249,11 +249,13 @@ export const GroupCallView: FC<Props> = ({
     }
   }, [isJoined, rtcSession]);
 
-  const e2eeConfig = useMemo((): E2EEConfig | undefined => {
+  const e2eeConfig = useMemo((): E2EEConfig => {
     if (perParticipantE2EE) {
       return { mode: E2eeType.PER_PARTICIPANT };
     } else if (e2eeSharedKey) {
       return { mode: E2eeType.SHARED_KEY, sharedKey: e2eeSharedKey };
+    } else {
+      return { mode: E2eeType.NONE };
     }
   }, [perParticipantE2EE, e2eeSharedKey]);
 

src/room/InCallView.tsx

@@ -95,7 +95,7 @@ const POST_FOCUS_PARTICIPANT_UPDATE_DELAY_MS = 3000;
 
 export interface ActiveCallProps
   extends Omit<InCallViewProps, "livekitRoom" | "connState"> {
-  e2eeConfig?: E2EEConfig;
+  e2eeConfig: E2EEConfig;
 }
 
 export const ActiveCall: FC<ActiveCallProps> = (props) => {
@@ -111,10 +111,6 @@ export const ActiveCall: FC<ActiveCallProps> = (props) => {
     return null;
   }
 
-  if (props.e2eeConfig && !livekitRoom.isE2EEEnabled) {
-    livekitRoom.setE2EEEnabled(!!props.e2eeConfig);
-  }
-
   return (
     <RoomContext.Provider value={livekitRoom}>
       <InCallView {...props} livekitRoom={livekitRoom} connState={connState} />