Improve MacOS build

[dail8859]

No description provided.

[hemanpa]

The macOS jobs here all pass, so this fixes the ld: framework 'AGL' not found
failures on master (Qt 6.5/6.8 link against AGL, which was removed in the macOS 26
SDK). Just the two windows-11-arm jobs are failing, and I think it's a one-line fix.

Both fail in Install Qt with:

ERROR   : The packages ['qt5compat', 'qt_base'] were not found while parsing XML of package information!

win64_msvc2019_arm64 isn't a published architecture for these Qt versions. Checking
against the live repositories with the same aqtinstall version the action uses (3.3.0):

$ aqt list-qt windows desktop --arch 6.8.3   | tr ' ' '\n' | grep arm
win64_msvc2022_arm64_cross_compiled

$ aqt list-qt windows desktop --arch 6.10.0  | tr ' ' '\n' | grep arm
win64_msvc2022_arm64_cross_compiled

So for host: windows (which is what the step resolves to for these jobs) the value
should be win64_msvc2022_arm64_cross_compiled, on lines 36 and 41. qt5compat is
available for that architecture, so the modules: line should be fine as-is:

$ aqt list-qt windows desktop --modules 6.8.3 win64_msvc2022_arm64_cross_compiled | tr ' ' '\n' | grep qt5compat
qt5compat

There's also a native option if you'd prefer non-cross-compiled Qt on those runners:
host: windows_arm64 with arch: win64_msvc2022_arm64 (also has qt5compat).

I've only verified the architecture strings against the repositories — I wasn't able to
run the workflow on my fork, so I can't confirm the Configure/Build steps succeed
afterwards with cmake_arch: ARM64.

The codespell failure here is the pre-existing alot typo on master, which #1124
fixes.

[dail8859]

I got the MacOS stuff working better it appears and at the time took a crack at arm support. But it seems #1128 has that ironed out way better than my attempt.

So hopefully will get some time soon to take the Mac stuff from this PR and the Windows ARM stuff from #1128 and everything should be in a pretty good state.