Update emscripten.yml

Author: mcbarton

.github/workflows/emscripten.yml

@@ -617,7 +617,7 @@ jobs:
         echo "PREFIX=$PREFIX" >> $GITHUB_ENV
   
     - name: Emscripten build of CppInterOp on Unix systems (static library)
-      if: ${{ runner.os != 'windows' || ${{ matrix.os }} != "macos"*  && ${{ matrix.clang-runtime }} == "19" }}
+      if: runner.os != 'Windows' && !(matrix.os == 'ubuntu'* && matrix.clang-runtime == '19')
       shell: bash -l {0}
       run: |
         # FIXME: Static library builds, but tests fail to build on Github runner for Ubuntu llvm 19 case