Addressing zio-json release review comments (#2809)

@adamw Applying Copilot's correct review suggestion
#2806 (comment)

Before submitting pull request:
- [x] Check if the project compiles by running `sbt compile`
- [x] Verify docs compilation by running `sbt compileDocs`
- [x] Check if tests pass by running `sbt test`
- [x] Format code by running `sbt scalafmt`

Author: mijicd

.github/workflows/ci.yml

@@ -101,7 +101,9 @@ jobs:
         run: echo "STTP_NATIVE=1" >> $GITHUB_ENV
       - name: Enable ZIO and Loom-specific modules
         if: matrix.java == '21'
-        run: echo "ONLY_LOOM=1" >> $GITHUB_ENV
+        run: |
+          echo "WITH_ZIO=1" >> $GITHUB_ENV
+          echo "ONLY_LOOM=1" >> $GITHUB_ENV
       - name: Compile
         run: sbt compile
       - name: Publish artifacts