Fix macOS version detection

[komret]

Browsers (including Electron) report all Mac OS versions from 10.15.7 onwards as 10.15.7 to prevent fingerprinting. This makes our getOsVersion util unusable for Mac OS - for example, it cannot be reliably used in messsage system, see #16741. However, there is a way to circumvent it in desktop apps. It was partially replaced here, but it should be done everywhere in the app.

[Lemonexe]

I was curious if there is any alternative at all in browser.
The desktopOsVersion is never available on Suite Web.
On chromium based browsers, we can use

window.navigator.userAgentData.getHighEntropyValues(['platform', 'platformVersion']).then(console.log)

But not available on Firefox or Safari..

But then again, Desktop is all we need..