fix: readd type

Author: dannyhw

cli/src/templates/packages/nativewindui/theme/index.ts.ejs

@@ -2,7 +2,7 @@ import { Theme } from '@react-navigation/native';
 import { DefaultTheme, DarkTheme } from '@react-navigation/native';
 import { COLORS } from './colors';
 
-const NAV_THEME = {
+const NAV_THEME: { light: Theme; dark: Theme } = {
   light: {
     dark: false,
     colors: {