[llvm] [ExecutionEngine][test][RISCV] Don't mark RISCV as unsupported (PR #124464)

[Philip Reames via llvm-commits]

https://github.com/preames approved this pull request.

LGTM

As a follow up, would you mind moving the force-interpreter tests into the Interpreter subtree?

https://github.com/llvm/llvm-project/pull/124464