Update the CEF version used for Windows Desktop & Simulator

[nprice-flextrade]

Is your feature request related to a problem? Please describe.
I've discovered that the JCEF version that is (automatically) downloaded & installed for CodenameOne is quite old - logging shows that it's Chrome 84, from (I think) 2021:

JCEF Version = 84.4.1.262
CEF Version = 84.4.1
Chromium Version = 84.0.4147.105

Unfortunately, this version of Chrome doesn't support (among other things) the coalescing assignment operator (??=) that is used in the latest version of React - meaning I can't run a new-ish React app embedded in the CodenameOne environment.

Describe the solution you'd like
Update CEF to a more recent version

Describe alternatives you've considered
Alternatively, provide instructions to swap in a pre-built version of JCEF downloaded from https://github.com/jcefmaven/jcefbuild/releases - I don't know if this is actually possible, since it appears that the artifacts currently used might be from a fork of JCEF, and I don't know how extensive those changes might be...

[shai-almog]

@shannah I wonder if it would be possible to implement the build through CI? I'm assuming it will time out?
It should be free since the code is open source.