Fix font not resetting when logging out (#8670)

* Fix font not resetting when logging out

* Adopt on_logged_in and on_logged_out into DispatcherAction

* Add tests

* Add copyright

src/stores/LifecycleStore.ts

@@ -71,7 +71,7 @@ class LifecycleStore extends Store<ActionPayload> {
                 break;
             }
             case 'on_client_not_viable':
-            case 'on_logged_out':
+            case Action.OnLoggedOut:
                 this.reset();
                 break;
         }

src/stores/ReadyWatchingStore.ts

@@ -22,6 +22,7 @@ import { EventEmitter } from "events";
 import { MatrixClientPeg } from "../MatrixClientPeg";
 import { ActionPayload } from "../dispatcher/payloads";
 import { IDestroyable } from "../utils/IDestroyable";
+import { Action } from "../dispatcher/actions";
 
 export abstract class ReadyWatchingStore extends EventEmitter implements IDestroyable {
     protected matrixClient: MatrixClient;
@@ -83,7 +84,7 @@ export abstract class ReadyWatchingStore extends EventEmitter implements IDestro
                 this.matrixClient = payload.matrixClient;
                 await this.onReady();
             }
-        } else if (payload.action === 'on_client_not_viable' || payload.action === 'on_logged_out') {
+        } else if (payload.action === 'on_client_not_viable' || payload.action === Action.OnLoggedOut) {
             if (this.matrixClient) {
                 await this.onNotReady();
                 this.matrixClient = null;

src/stores/RoomViewStore.tsx

@@ -241,7 +241,7 @@ export class RoomViewStore extends Store<ActionPayload> {
                 break;
             }
             case 'on_client_not_viable':
-            case 'on_logged_out':
+            case Action.OnLoggedOut:
                 this.reset();
                 break;
             case 'reply_to_event':