[QueryBeans] Fix for missing inherited properties when parent only has @DiscriminatorValue

A parent in the Inheritance hierarchy has @DiscriminatorValue but not the @Inheritance annotation. The bug means the inherited properties are not included on the generated query bean.

The fix is to the querybean-generator to pick up inherited properties for this case.

ebean-querybean/src/test/java/org/querytest/InheritanceTest.java

@@ -0,0 +1,54 @@
+package org.querytest;
+
+import org.example.domain.ACat;
+import org.example.domain.ADog;
+import org.example.domain.Animal;
+import org.example.domain.query.QACat;
+import org.example.domain.query.QASuperCat;
+import org.example.domain.query.QAnimal;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class InheritanceTest {
+
+  @Test
+  void query_setInheritType() {
+
+    ACat cat = new ACat("C1");
+    cat.save();
+
+    ACat cat2 = new ACat("C2");
+    cat2.save();
+
+    ADog dog = new ADog("D1", "D878");
+    dog.save();
+
+    List<Animal> animals = new QAnimal()
+      .id.greaterOrEqualTo(1L)
+      .setInheritType(ACat.class)
+      .findList();
+
+    assertThat(animals).isNotEmpty();
+  }
+
+  @Test
+  void query_onInheritedProperty() {
+    new QACat()
+      .name.eq("foo")
+      .catProp.eq("foo")
+      .findList();
+  }
+
+  @Test
+  void query_onInheritedProperty_whenParentOnlyHasDiscriminator() {
+    // the .name and .catProp properties exist on QASuperCat()
+    new QASuperCat()
+      .superCat.eq("foo")
+      .name.eq("foo")
+      .catProp.eq("foo")
+      .findList();
+  }
+}