This reverts commit 530c7d1bbd.
The installer uses the `UAC` plugin which creates two instances of the
installer when launched. One runs with admin privileges while the other
with user privileges. Creating a mutex in the first instance stops the
other one from continuing.
PR #23540
Qt >=6.8 can native compile on Windows ARM64 machine, and GitHub also provides windows-11-arm runner. so I think It's time to add support.
I've tested from my branch and Snapdragon 8cx gen3 computer. all ci build passed.
Closes#11465
PR #23328.
