Add "Safari" to PWACompat loading condition

They froze the UA string on iPad.

src/excalidraw-app/pwa.ts

@@ -5,7 +5,7 @@ import { EVENT } from "../constants";
 // No one should have to do this manually, and eventually this annoyance will
 // go away once https://bugs.webkit.org/show_bug.cgi?id=183937 is fixed.
 if (
-  /\b(iPad|iPhone|iPod)\b/.test(navigator.userAgent) &&
+  /\b(iPad|iPhone|iPod|Safari)\b/.test(navigator.userAgent) &&
   !matchMedia("(display-mode: standalone)").matches
 ) {
   import(/* webpackChunkName: "pwacompat" */ "pwacompat");