Fix Notifier import cycle (#34122)

* Fix Notifier import cycle

* Fix tests

* Delint

* Iterate

* Handle SDKContextClass `client` initialisation internally

Rather than via MatrixChat - this is predominantly for Lifecycle tests as they don't use a MatrixChat and it doesn't make much sense for this component to own this state.

* Fix tests

* Iterate

* Improve coverage

* Improve coverage

* Fix bad merge

* Iterate

apps/web/src/components/structures/MatrixChat.tsx

@@ -37,7 +37,6 @@ import { MatrixClientPeg } from "../../MatrixClientPeg";
 import PlatformPeg from "../../PlatformPeg";
 import SdkConfig, { type ConfigOptions } from "../../SdkConfig";
 import dis from "../../dispatcher/dispatcher";
-import Notifier from "../../Notifier";
 import Modal from "../../Modal";
 import { showRoomInviteDialog, showStartChatInviteDialog } from "../../RoomInvite";
 import * as Rooms from "../../Rooms";
@@ -1638,8 +1637,8 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
             this.firstSyncComplete = true;
             this.firstSyncPromise.resolve();
 
-            if (Notifier.shouldShowPrompt() && !MatrixClientPeg.userRegisteredWithinLastHours(24)) {
-                showNotificationsToast(false);
+            if (this.stores.notifier.shouldShowPrompt() && !MatrixClientPeg.userRegisteredWithinLastHours(24)) {
+                showNotificationsToast(this.stores.notifier, false);
             }
 
             dis.fire(Action.FocusSendMessageComposer);