Decrease Java model priority (#1239)

This way when both jackson model and java model are in the classpath,
the jackson model will take preference.

Signed-off-by: fjtirado <ftirados@redhat.com>

Author: fjtirado

experimental/model/src/main/java/io/serverlessworkflow/impl/model/func/JavaModelFactory.java

@@ -82,4 +82,9 @@ public WorkflowModel fromNull() {
   public WorkflowModel fromOther(Object obj) {
     return new JavaModel(obj);
   }
+
+  @Override
+  public int priority() {
+    return DEFAULT_PRIORITY + 10;
+  }
 }