test(kunlunxin): add generic IPC memory handle validation

[yangchaoss]

PR Category

PAL (Portable Abstraction Layer)

PR Types

Test Case

PR Description

This PR adds generic IPC memory handle validation for the device adaptor,
based on FlagCX v0.13.0 (0beba7aa).

Changes:

• Add argument validation and allocation error propagation to the KunlunXin
  ipcMemHandleCreate implementation.
• Add backend-agnostic unit tests for ipcMemHandleCreate,
  ipcMemHandleGet, and ipcMemHandleClose.
• Manage opaque IPC handles only through the public adaptor APIs.
• Remove KunlunXin-specific conditional compilation and private-header
  dependencies from the adaptor tests.
• Add a two-rank, same-host MPI test covering:
  Create -> Get -> transfer -> Open -> data validation -> Close -> Free.
• Add KunlunXin and MPI build support for the adaptor tests.

Validation:

• 3 generic IPC adaptor unit tests passed.
• The two-rank same-host MPI IPC lifecycle test passed on both ranks.
• git diff --check passed.

Notes:

• Device IPC handles are host-local. The MPI lifecycle test must run with
  both ranks on the same host and does not support cross-node handle transfer.
• Runtime validation was completed on KunlunXin. Other device backends were
  not runtime-tested in this environment; unsupported IPC implementations
  are skipped at runtime.
• DeviceAdaptorTest.StreamWaitEvent still fails in the full adaptor suite
  in this environment and is not modified by this PR.

[CLAassistant]

All committers have signed the CLA.

[MC952-arch]

Better to not introduce branch compilation in unittest

[yangchaoss]

Done. Removed the KunlunXin-specific compile guards and private-header
dependency from the adaptor tests. IPC handles are now managed through
the public adaptor APIs, and unsupported backends are skipped at runtime.
The changes were also rebased onto FlagCX v0.13.0 (0beba7a).

[MC952-arch]

MPI_NP ?= 8