feat: add generic type aliases for screen props

closes #7971

packages/stack/src/index.tsx

@@ -51,6 +51,7 @@ export { default as useGestureHandlerRef } from './utils/useGestureHandlerRef';
 export type {
   StackNavigationOptions,
   StackNavigationProp,
+  StackScreenProps,
   StackHeaderProps,
   StackHeaderLeftButtonProps,
   StackHeaderTitleProps,

packages/stack/src/types.tsx

@@ -15,6 +15,7 @@ import {
   NavigationHelpers,
   StackNavigationState,
   StackActionHelpers,
+  RouteProp,
 } from '@react-navigation/native';
 
 export type StackNavigationEventMap = {
@@ -45,6 +46,14 @@ export type StackNavigationProp<
 > &
   StackActionHelpers<ParamList>;
 
+export type StackScreenProps<
+  ParamList extends ParamListBase,
+  RouteName extends keyof ParamList = string
+> = {
+  navigation: StackNavigationProp<ParamList, RouteName>;
+  route: RouteProp<ParamList, RouteName>;
+};
+
 export type Layout = { width: number; height: number };
 
 export type GestureDirection =