[CI] Bring changes to the CI and fix the simulator install (#20928)

There seems to be several problems with the xcode16 branch:

1. There was a merge issue and the ci broke were we were trying to use the sh to install the runtimes.
2. xcodebuild on xcode16 when using EO machines cannot install the needed simulator runtime.

The PR seems to have some noise because there is a back port missing
where we fixed a number of yaml lint issues. The important change is at
'Provision simulators (simctl)'. We had to do a few things:

1. Upload the needed runtime to an internal url.
2. Use simctl to add the runtime, which works as opposed to xcodebuild.

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Co-authored-by: Michael Cummings (MSFT) <mcumming@microsoft.com>
Co-authored-by: Alex Soto <alex@soto.dev>
Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com>

Author: 4 people