Use platform-specific qwen3 golden for metax

Author: AlexMa616

.github/configs/metax.yml

@@ -188,3 +188,13 @@ test_matrix:
       # specific case that are unstable on Metax
       # models
       - tests/unit_tests/models/test_gpt_model.py::TestGPTModelWithCustomPG::test_gpt_model_with_custom_pg
+
+  functional:
+    train:
+      - model: gpt
+        test_case: qwen3_0p6b_mcore_te_tp1_pp1_no_mmap_bin_files
+        training_script: pretrain_gpt.py
+        n_repeat: 1
+        golden_environment: dev
+        golden_platform: c500
+        enable_lightweight_mode: false

tests/functional_tests/test_cases/gpt/qwen3_0p6b_mcore_te_tp1_pp1_no_mmap_bin_files/golden_values_dev_c500.json

@@ -0,0 +1,19 @@
+{
+  "lm loss": {
+    "start_step": 1,
+    "end_step": 10,
+    "step_interval": 1,
+    "values": {
+      "1": 11.93016,
+      "2": 11.87934,
+      "3": 11.78204,
+      "4": 11.84415,
+      "5": 11.64288,
+      "6": 11.57093,
+      "7": 11.56676,
+      "8": 11.75107,
+      "9": 11.77425,
+      "10": 11.44834
+    }
+  }
+}