refactoring _NetWebView2_LoadWait() by adding __NetWebView2_WaitForReadyState() - supplement

[mlipok]

Important

Thanks for your effort and interest 💛 in improving the project. It's very appreciated.

Description

suplement for #89

[mlipok]

How I said this is suplement for #89

Some of these examples won't work properly until you merge this PR

They are also modified is according to
#78

[mlipok]

This commit
Update 003-Multi-Basic.au3
birngs fix which shows exactly that using:

$hWindow = WinGetHandle($hWindow)

is must have or at least good coding practice with this UDF/component.

Without this mod when you click on Exit in first WevView instance then it closes both instances instead only first instance.