Changes Examples

dotnet publish --use-current-runtime -p:PublishRuntimeIdentifier=tizen will publish with tizen, not the ucr.
dotnet publish --self-contained -p:PublishRuntimeIdentifier=win-x86 will publish with rid: win-x86
dotnet publish -p:PublishRuntimeIdentifier=win-x86 will publish with win-x86 rid.

In a project file:

<RuntimeIdentifier>win-x86</RuntimeIdentifier>
<PublishRuntimeIdentifier>win-x64</PublishRuntimeIdentifier>

dotnet build -> win-x86 rid.
dotnet publish -> win-x64 rid.

dotnet publish -r win-x86 /p:PublishRuntimeIdentifier=tizen will get rid: win-x86. Not ideal, we can do it the other way but it will have potentially far-reaching consequences.
dotnet publish --property:RuntimeIdentifier=win-x86 /p:PublishRuntimeIdentifier=tizen: gives win-x86 rid.

Summary

• PublishRuntimeIdentifier will override RuntimeIdentifier when publishing unless it is global, like passed in with dotnet publish --r RID /p:PulishRuntimeIdentifier=RID_2
• PublishRuntimeIdentifier will override the RID if UCR is used.
• Same thing where it doesn't work with t:/Publish but we plan to make it work in VS Publish outside of this PR.

The rest is pretty self explanatory...