runtime: hard-fail mgpuModuleLoadJIT on HIP

[fallintoplace]

Summary

mgpuModuleLoadJIT in the ROCm runtime wrappers previously used assert(false) and then returned nullptr on HIP builds.

In release builds (NDEBUG), that assertion is stripped, so callers could continue with a null module pointer and fail later in opaque ways.

This change makes the function fail fast in all configurations by:

• Emitting an explicit diagnostic to stderr.
• Calling std::abort() unconditionally in mgpuModuleLoadJIT.

Behavior impact

• Before: unsupported path could silently continue and produce downstream errors.
• After: execution stops immediately with a clear runtime message, matching the hard-fail intent and avoiding undefined behavior from dereferencing/using nullptr.

Validation

• Not run in this change.

Files

• lib/Runtime/ROCm/FlyRocmRuntimeWrappers.cpp

[coderfeli]

@fallintoplace conflict.

[fallintoplace]

Let me fix the conflict and push the commit in a few hours.