onnxruntime: exclude cp314t riscv64 for 1.30.0 (heap-corruption abort)

cp314t's Test wheel step aborts in onnxruntime_test_python.py with
"malloc(): unaligned tcache chunk detected" (SIGABRT). 1.29.0 built and
tested clean on cp314t riscv64, so this is a 1.30.0 regression rather
than a general free-threading gap; scope the exclusion to this version
so it doesn't silently persist once upstream fixes it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011RwtHNpuiuiCk4MstTLu8m

Author: luhenry

.github/workflows/build-onnxruntime.yml

@@ -53,6 +53,12 @@ jobs:
         version: ${{ fromJSON(needs.setup.outputs.versions) }}
         # onnxruntime is not abi3: upstream publishes one wheel per interpreter.
         python: ["cp312", "cp313", "cp314", "cp314t"]
+        exclude:
+          # 1.30.0 aborts riscv64 cp314t in onnxruntime_test_python.py with a heap-corruption
+          # SIGABRT ("malloc(): unaligned tcache chunk detected"); 1.29.0 built/tested clean
+          # on cp314t riscv64, so this is a regression to re-check on the next version bump.
+          - version: "1.30.0"
+            python: cp314t
 
     env:
       ONNXRUNTIME_VERSION: ${{ matrix.version }}