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/features/settings/Settings.tsx

@@ -89,7 +89,7 @@ const useSettingsMenuItems = (): SettingsMenuItem[] =>
         icon: Icons.Info,
       },
     ],
-    []
+    [],
   );
 
 type SettingsProps = {
@@ -103,7 +103,7 @@ export function Settings({ initialPage, requestClose }: SettingsProps) {
   const profile = useUserProfile(userId);
   const displayName = profile.displayName ?? getMxIdLocalPart(userId) ?? userId;
   const avatarUrl = profile.avatarUrl
-    ? mxcUrlToHttp(mx, profile.avatarUrl, useAuthentication, 96, 96, 'crop') ?? undefined
+    ? (mxcUrlToHttp(mx, profile.avatarUrl, useAuthentication, 96, 96, 'crop') ?? undefined)
     : undefined;
 
   const screenSize = useScreenSizeContext();