[Feature Request] Ability to hide StageWebView scrollbar

[itlancer]

Feature Description

AIR should have ability to hide StageWebView scrollbar.
It very useful for some cases, especially for retail kiosks where such things shouldn't be shown.

Examples for some platforms:
https://blog.jussipalo.com/2021/02/webview2-how-to-hide-scrollbars.html
https://developer.android.com/reference/android/view/View#setScrollbarFadingEnabled(boolean)
https://stackoverflow.com/a/56307794

Related issue:
#1854
#1494
#1493
#1492
#223
#214
#174
#143

Known Workarounds

none
For Windows may be postMessage usage could help: #1699 (comment)
May be write native extension with own webview implementation.