revert: keep macosx routing through build-mac-framework-rn.sh in CI

Keep backward compatibility by preserving the separate mac framework
build script in CI. The macosx support in build-ios-framework-rn.sh is
still available for downstream consumers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Saadnajmi

.github/workflows/build-apple-slices-hermes.yml

@@ -45,8 +45,17 @@ jobs:
           # HermesC is used to build hermes, so it has to be executable
           chmod +x ./build_host_hermesc/bin/hermesc
 
-          chmod +x ./utils/build-ios-framework-rn.sh
-          BUILD_TYPE="${{ matrix.flavor }}" ./utils/build-ios-framework-rn.sh "$SLICE"
+          if [[ "$SLICE" == "macosx" ]]; then
+            echo "[HERMES] Building Hermes for MacOS"
+
+            chmod +x ./utils/build-mac-framework-rn.sh
+            BUILD_TYPE="${{ matrix.flavor }}" ./utils/build-mac-framework-rn.sh
+          else
+            echo "[HERMES] Building Hermes for iOS: $SLICE"
+
+            chmod +x ./utils/build-ios-framework-rn.sh
+            BUILD_TYPE="${{ matrix.flavor }}" ./utils/build-ios-framework-rn.sh "$SLICE"
+          fi
 
           echo "Moving from build_$SLICE to $FINAL_PATH"
           mv build_"$SLICE" "$FINAL_PATH"