Can't change CEF volume in settings or setBrowserVolume

[ArranTuna]

Describe the bug
For instance you are playing a youtube video via CEF and you want to lower its volume, but you can't because changing the MTA volume doesn't affect CEF's volume.

myonlake / @patrikjuvonen said:
This is somewhat difficult to make in the CWebView class. Mute state or volume state aren't really resetting as supposed to on YouTube for example. This is because we're injecting our JavaScript onto the webpage which might be overriding it. So we're not actually in control.

There is also a comment about this in code:

Since the necessary interfaces of the core audio API were introduced in Win7, we've to fallback to HTML5 audio

Also regarding the mute on minimize feature: we need to store that as a separate boolean because the webpage might have HTML5 elements that already have volume/muted attributes, so we're overriding them upon minimize and volume control unless we have a separate minimize setter/getter.

I suppose if we drop XP support at some point in the future, we'll be able to make this work the right way without the HTML5 "hack".

To Reproduce
unstated

Expected behavior
Change volume of CEF (settings or setBrowserVolume)

Screenshots
If applicable, add screenshots to help explain your problem.

MTA Client (please complete the following information):
unstated

MTA Server (please complete the following information):
unstated

Additional context

• https://bugs.mtasa.com/view.php?id=8931
• Related to Change/Select Voice/Sound Device #1146