BootData: Fix nav tree sort regression (#27533)

#26395 introduced a regression regarding sort order of nav tree
items set in Grafana boot data and used for rendering the sidemenu.
This fixes so that sort happens after RunIndexDataHooks is called
in case the hook make changes to the nav tree.

(cherry picked from commit 1983de962c)

pkg/api/index.go

@@ -327,10 +327,6 @@ func (hs *HTTPServer) getNavTree(c *models.ReqContext, hasEditPerm bool) ([]*dto
 		Children:     []*dtos.NavLink{},
 	})
 
-	sort.SliceStable(navTree, func(i, j int) bool {
-		return navTree[i].SortWeight < navTree[j].SortWeight
-	})
-
 	return navTree, nil
 }
 
@@ -434,6 +430,10 @@ func (hs *HTTPServer) setIndexViewData(c *models.ReqContext) (*dtos.IndexViewDat
 
 	hs.HooksService.RunIndexDataHooks(&data, c)
 
+	sort.SliceStable(data.NavTree, func(i, j int) bool {
+		return data.NavTree[i].SortWeight < data.NavTree[j].SortWeight
+	})
+
 	return &data, nil
 }