Extend build workflow to run tests on macOS with/without JNA

Author: sungshik

.github/workflows/build.yaml

@@ -15,9 +15,9 @@ jobs:
         os:
           - image: ubuntu-latest
           - image: macos-latest
-            argLine: -Dengineering.swat.java-watch.mac=jdk
+            mac-backend: jdk
           - image: macos-latest
-            argLine: -Dengineering.swat.java-watch.mac=jna
+            mac-backend: jna
           - image: windows-latest
         jdk: [11, 17, 21]
 
@@ -34,7 +34,7 @@ jobs:
           cache: 'maven'
 
       - name: test
-        run: mvn -B clean test -DargLine="${{ matrix.os.argLine }}"
+        run: mvn -B clean test -DargLine="-Dengineering.swat.java-watch.mac=${{ matrix.os.mac-backend }}"
         env:
           DELAY_FACTOR: 3