[toolchain] Fix try compile handling for Xbox

[walbourn]

This updates the x64-xbox- triplets toolchain file to match the changes for try_compile support added in PR 24493.

[walbourn]

The try-compile tests were failing for these triplets and now passes.

.\vcpkg.exe install try-compile:x64-xbox-scarlett --overlay-ports scripts\test_ports --enforce-port-checks
.\vcpkg.exe install try-compile:x64-xbox-scarlett-static --overlay-ports scripts\test_ports --enforce-port-checks
.\vcpkg.exe install try-compile:x64-xbox-xboxone --overlay-ports scripts\test_ports --enforce-port-checks
.\vcpkg.exe install try-compile:x64-xbox-xboxone-static --overlay-ports scripts\test_ports --enforce-port-checks

[walbourn]

Verified GDK-aware ports using the new toolchain file: directxtex, directxtk12, directxmesh, uvatlas.

Working on a full test pass on all other ports now...

[walbourn]

Doing a 'world rebuild' and 1044 ports passed using the xbox triplets using the updated toolchain. Doing another pass to verify that number is the same with the older toolchain.

Note that many of the failures are due to issues with some dependencies like boost-atomic which do not properly support the WINFAMILY_API_GAMES partition, and/or dependencies on the 148 ports that are marked as not being able to support xbox.

[walbourn]

1046 ports built with the older toolchain file for Xbox. The minc and clockutils now fail because of 'proper' try compile support which is by design.

[walbourn]

@BillyONeal is there something else needing to happen to get this checked in?

[Neumann-A]

@walbourn: Patience? Team meetings for PRs marked vcpkg-team-review only happen Thursdays as far as I am aware of it. (so maybe in the next 12h?)

[BillyONeal]

Seems substantially identical to #24493