fix(ci): use full package build in benchmark workflow

Avoid reduced reactor (-pl performance -am) which hides flatc
failures. Drop -q to expose build errors. Run java -jar directly.

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

Author: dfa1

.github/workflows/benchmark.yml

@@ -37,8 +37,18 @@ jobs:
           unzip -j flatc.zip flatc
           sudo install -m 755 flatc /usr/local/bin/flatc
 
+      - name: Build
+        run: ./mvnw package -DskipTests
+
       - name: Run benchmarks
-        run: ./bench
+        run: |
+          java \
+            --add-opens java.base/java.nio=ALL-UNNAMED \
+            --enable-native-access=ALL-UNNAMED \
+            --sun-misc-unsafe-memory-access=allow \
+            -jar performance/target/benchmarks.jar \
+            -rf json \
+            -rff performance/target/benchmark-result.json
 
       - name: Store benchmark results
         uses: benchmark-action/github-action-benchmark@v1