[release/8.0.1xx] Add escape hatch for publishing with SelfContained=true, but no RuntimeIdentifier. #37368
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Description
Introduce a
$(AllowSelfContainedWithoutRuntimeIdentifier)check, to avoid a build error.Projects that run on Android & macOS can be built via:
Where the Android (or macOS) workloads setup these projects to always be self-contained and target multiple architectures /
$(RuntimeIdentifiers).Customer Impact
Customers will not notice this change, but it allows us to improve the behavior between the Android/macOS workloads and the .NET SDK.
Bringing this change to .NET 8 allows us to:
Risk: low
The change itself is adding an MSBuild Condition that checks a property that is blank by default.
Backport of #36047 to release/8.0.1xx
/cc @marcpopMSFT @rolfbjarne