ci: Temporarily disable 3.13 for evaluation (Azure#38058)

3.13 tests immediately fail because azure-ai-ml doesn't run on 3.13

Author: kdestin

sdk/evaluation/ci.yml

@@ -28,6 +28,13 @@ extends:
     ServiceDirectory: evaluation
     ValidateFormatting: true
     TestProxy: true
+    # This custom matrix config should be dropped once:
+    #  * Once azure-ai-ml supports 3.13 (currently crashes due to type annotation)
+    MatrixConfigs:
+      - Name: evaluation_ci_matrix
+        Path: eng/pipelines/templates/stages/platform-matrix-no-313.json
+        Selection: sparse
+        GenerateVMJobs: true
     Artifacts:
     - name: azure-ai-evaluation
       safeName: azureaievaluation