Fixes/app store mobile (#2271)

* Grid fixes for mobile

* Adds missing NavTabs to installed apps page

apps/web/components/apps/AllApps.tsx

@@ -9,7 +9,7 @@ export default function AllApps({ apps }: { apps: App[] }) {
   return (
     <div className="mb-16">
       <h2 className="mb-2 text-lg font-semibold text-gray-900">{t("all_apps")}</h2>
-      <div className="grid-col-1 grid gap-3 md:grid-cols-3">
+      <div className="grid-col-1 grid grid-cols-1 gap-3 md:grid-cols-3">
         {apps.map((app) => (
           <AppCard
             key={app.name}