fix: subNvue mask for parentWeview

src/platforms/app-plus/service/api/plugin/sub-nvue.js

 import {
   requireNativePlugin
 } from './require-native-plugin'
-
+
 function wrapper (webview) {
   webview.$processed = true
 
@@ -66,9 +66,20 @@ export function getSubNVueById (id) {
   if (webview && !webview.$processed) {
     wrapper(webview)
   }
+  let oldSetStyle = webview.setStyle
+  var parentWebview = plus.webview.getWebviewById(webview.__uniapp_mask_id)
+  webview.setStyle = function (style) {
+    if (style && style.mask) {
+      parentWebview.setStyle({
+        mask: style.mask
+      })
+      delete style.mask
+    }
+    oldSetStyle.call(this, style)
+  }
   return webview
-}
-
+}
+
 export function getCurrentSubNVue () {
   return getSubNVueById(plus.webview.currentWebview().id)
 }

src/platforms/app-plus/service/framework/webview/parser/sub-nvue-parser.js

@@ -121,6 +121,7 @@ function initSubNVue (subNVue, routeOptions, webview) {
       `UNIAPP[webview][${webview.id}]:create[${subNVue.id}]:${JSON.stringify(style)}`
     )
   }
+  delete style.mask
   const subNVueWebview = plus.webview.create('', subNVue.id, style, extras)
 
   if (isPopup) {