[Breaking change] For dotnet test, switch -a to alias --arch instead of --test-adapter-path #21389
Description
Check it out ...
rich@MacBook-Air-M1-2020 tests % dotnet test --help | grep -- -a
-a, --test-adapter-path <ADAPTER_PATH> The path to the custom adapters to
--blame-crash-collect-always Enables collecting crash dump on
<blame-crash-collect-always> expected as well as unexpected
--arch <arch> The target architecture.
rich@MacBook-Air-M1-2020 tests % dotnet run --help | grep -- -a
-a, --arch <arch> The target architecture.Sure would be nice to make -a the same everywhere. I doubt that the current usage of -a is common.
This is similar to #21952.