Fix MyViewsProperty condition (#11252)

Author: janfaracik

core/src/main/java/hudson/model/View.java

@@ -1250,6 +1250,12 @@ public static View createViewFromXML(String name, InputStream xml) throws IOExce
         }
     }
 
+    // for Jelly
+    @Restricted(DoNotUse.class)
+    public boolean isMyViewsProperty() {
+        return getOwner() instanceof MyViewsProperty;
+    }
+
     public static class PropertyList extends DescribableList<ViewProperty, ViewPropertyDescriptor> {
         private PropertyList(View owner) {
             super(owner);

core/src/main/resources/hudson/model/View/main.jelly

@@ -16,7 +16,7 @@
 
             <j:if test="${!newDashboardPage}">
               <j:choose>
-                <j:when test="${it.owner.class == hudson.model.MyViewsProperty.class}">
+                <j:when test="${it.isMyViewsProperty()}">
                   <st:include it="${it.owner.viewsTabBar}" page="viewTabs" />
                 </j:when>
                 <j:otherwise>
@@ -41,7 +41,7 @@
 
             <j:if test="${!newDashboardPage}">
               <j:choose>
-                <j:when test="${it.owner.class == hudson.model.MyViewsProperty.class}">
+                <j:when test="${it.isMyViewsProperty()}">
                   <st:include it="${it.owner.viewsTabBar}" page="viewTabs" />
                 </j:when>
                 <j:otherwise>