Run basic validation before custom validation

Author: rschmitt

src/main/java/com/github/rschmitt/dynamicobject/internal/DynamicObjectInstance.java

@@ -153,8 +153,8 @@ public D validate(D self) {
     }
 
     public Object $$validate() {
-        $$customValidate();
         Validation.validateInstance(this);
+        $$customValidate();
         return this;
     }