add test set name to run step

Author: derrickaw

.github/workflows/beam_PostCommit_Yaml_Xlang_Direct.yml

@@ -56,7 +56,7 @@ jobs:
       (github.event_name == 'schedule' && github.repository == 'apache/beam')
     runs-on: [self-hosted, ubuntu-24.04, main]
     timeout-minutes: 180
-    name: ${{ matrix.job_name }} (${{ matrix.job_phrase }})
+    name: ${{ matrix.job_name }} (${{ matrix.job_phrase }} ${{ matrix.test_set }})
     strategy:
       matrix:
         job_name: ["beam_PostCommit_Yaml_Xlang_Direct"]