fix: app-v3 pages.json 缺少 globalStyle 节点无法启动的问题

src/platforms/app-plus/service/api/route/navigate-to.js

@@ -63,7 +63,7 @@ export function navigateTo ({
   const urls = url.split('?')
   const path = urls[0]
   const routeStyles = __uniRoutes.find(route => route.path === path).window
-  const globalStyle = __uniConfig.window
+  const globalStyle = __uniConfig.window || {}
   if (!animationType) {
     animationType = routeStyles.animationType || globalStyle.animationType || ANI_SHOW
   }
@@ -80,4 +80,4 @@ export function navigateTo ({
       animationDuration
     }, callbackId)
   }, openType === 'appLaunch')
-}
+}