Add june progress blog post

Author: satya164

blog/2026-07-08-react-navigation-8.0-july-progress.md

@@ -121,9 +121,11 @@ function TabNavigator({ tabBarStyle, contentStyle, ...rest }) {
               });
 
               if (!isFocused && !event.defaultPrevented) {
-                navigation.dispatch({
-                  ...TabActions.jumpTo(route.name, route.params),
-                  target: state.key,
+                React.startTransition(() => {
+                  navigation.dispatch({
+                    ...TabActions.jumpTo(route.name, route.params),
+                    target: state.key,
+                  });
                 });
               }
             }}

static/assets/blog/8.x/dynamic-navigator-types.mp4

@@ -203,9 +203,9 @@ To work with the reworked TypeScript types, the type API for custom navigators h
 - }
 + export interface MyTypeBag extends NavigatorTypeBagBase {
 +   State: TabNavigationState<this['ParamList']>;
++   ActionHelpers: TabActionHelpers<this['ParamList']>;
 +   ScreenOptions: MyNavigationOptions;
 +   EventMap: MyNavigationEventMap;
-+   ActionHelpers: TabActionHelpers<this['ParamList']>;
 +   Navigator: typeof MyNavigator;
 + }
 +