Importing JS module with await on top level casuses browsers on iOS to fail to run windows.onload().
This was noted by me while using nacl-fast-es case it use top level await to set random function.
It has also been noted in this stackoverflow post top-level await in a module prevents `onload` from firing
For the moment I will skip using windows.onload() and hope that GUI element has been loaded correct.

onLoad initCall
Await module init call run (*) run
Sleep module init call (await import()) run run
Sleep module init call run(**) run
Syncron module init call run run

* Fail on iOS browsers

** Fail on all browsers