ci: Add namespace for realm server log artifacts (#2138)

Author: backspace

.github/workflows/ci.yaml

@@ -138,7 +138,7 @@ jobs:
         uses: actions/upload-artifact@v4
         if: always()
         with:
-          name: realm-server-log-${{ matrix.shardIndex }}
+          name: matrix-test-realm-server-log-${{ matrix.shardIndex }}
           path: /tmp/server.log
           retention-days: 30
 
@@ -291,7 +291,7 @@ jobs:
         uses: actions/upload-artifact@v4
         if: always()
         with:
-          name: realm-server-log-${{matrix.testModule}}
+          name: realm-server-test-realm-server-log-${{matrix.testModule}}
           path: /tmp/server.log
           retention-days: 30