[release/8.0] Fix LLVMAOT Mono runtime variant official build to produce correctly...

[release/8.0] Fix LLVMAOT Mono runtime variant official build to produce correctly named runtime packs (#92737)

* Fix LLVMAOT Mono runtime variant official build to produce correctly named runtime packs

In https://github.com/dotnet/runtime/commit/75ee623b8f0350a4b4be86fa71745a74beb059d1 the condition in src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.props got changed from checking `MonoBundleLLVMOptimizer` to `MonoAOTEnableLLVM` but we weren't setting that property in runtime-official.yml so both jobs produced runtime packs with the same suffix, resulting in the artifact uploads randomly overwriting each other.

* Fix more places that need MonoAOTEnableLLVM=true

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Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>