Merge pull request #24011 from dsyer

* gh-24011:
  Polish "Align MustacheViewResolver with other similar resolvers"
  Align MustacheViewResolver with other similar resolvers

Closes gh-24011

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/view/MustacheViewResolver.java

@@ -75,4 +75,9 @@ public class MustacheViewResolver extends AbstractTemplateViewResolver {
 		return view;
 	}
 
+	@Override
+	protected AbstractUrlBasedView instantiateView() {
+		return (getViewClass() == MustacheView.class) ? new MustacheView() : super.instantiateView();
+	}
+
 }