Fix playground deployment action (#1628)

Author: antvaset

.github/workflows/build.yml

@@ -47,6 +47,9 @@ jobs:
       uses: codecov/codecov-action@v5
       env:
         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+    - name: Compile Kotlin/JS cql-to-elm library for the playground
+      working-directory: ./Src/java
+      run: ./gradlew cql-to-elm:compileProductionLibraryKotlinJs cql-to-elm:compileProductionLibraryKotlinWasmJs
     - name: Install Node.js
       uses: actions/setup-node@v5
       with: