Replace console.warn with logger.warn

Related https://github.com/vector-im/element-web/issues/18425

src/stores/WidgetStore.ts

@@ -126,7 +126,7 @@ export default class WidgetStore extends AsyncStoreWithClient<IState> {
             // Sanity check for https://github.com/vector-im/element-web/issues/15705
             const existingApp = this.widgetMap.get(widgetUid(app));
             if (existingApp) {
-                console.warn(
+                logger.warn(
                     `Possible widget ID conflict for ${app.id} - wants to store in room ${app.roomId} ` +
                     `but is currently stored as ${existingApp.roomId} - letting the want win`,
                 );