chore: upgrade i18next 26, prettier 3, fontsource-variable, domhandler 6, lint-staged 17

- i18next 23->26 + react-i18next 15->17
- prettier 2->3, reformat all files
- replace @fontsource/inter with @fontsource-variable/inter 5, update import path
- domhandler 5->6 (aligns with transitive deps)
- lint-staged 16->17

src/app/plugins/call/CallEmbed.ts

@@ -96,7 +96,7 @@ export class CallEmbed {
     themeKind: ElementCallThemeKind,
     noiseSuppression = true,
     initialAudio = true,
-    initialVideo = false
+    initialVideo = false,
   ): Widget {
     const userId = mx.getSafeUserId();
     const deviceId = mx.getDeviceId() ?? '';
@@ -130,7 +130,7 @@ export class CallEmbed {
 
     const widgetUrl = new URL(
       `${trimTrailingSlash(import.meta.env.BASE_URL)}/public/element-call/index.html`,
-      window.location.origin
+      window.location.origin,
     );
     widgetUrl.search = params.toString();
 
@@ -170,10 +170,10 @@ export class CallEmbed {
     room: Room,
     widget: Widget,
     container: HTMLElement,
-    initialControlState?: CallControlState
+    initialControlState?: CallControlState,
   ) {
     const iframe = CallEmbed.getIframe(
-      widget.getCompleteUrl({ currentUserId: mx.getSafeUserId() })
+      widget.getCompleteUrl({ currentUserId: mx.getSafeUserId() }),
     );
     container.append(iframe);
 
@@ -199,7 +199,7 @@ export class CallEmbed {
           return;
         }
         this.control.onMediaState(evt);
-      })
+      }),
     );
 
     this.start();
@@ -243,7 +243,7 @@ export class CallEmbed {
     // Room widgets get locked to the room they were added in
     this.call.setViewedRoomId(this.roomId);
     this.disposables.push(
-      this.listenAction(ElementWidgetActions.JoinCall, this.onCallJoined.bind(this))
+      this.listenAction(ElementWidgetActions.JoinCall, this.onCallJoined.bind(this)),
     );
 
     // Populate the map of "read up to" events for this widget with the current event in every room.