fix(v3): compatible with renderer='native'

packages/webpack-uni-pages-loader/lib/platforms/app-plus/index.js

@@ -268,10 +268,7 @@ module.exports = function (pagesJson, userManifestJson) {
     appJson.nvueCompiler = 'weex'
   }
 
-  if (
-    manifestJson.plus.renderer === 'native' &&
-    !process.env.UNI_USING_V3_NATIVE // v3+native时，renderer为'auto'
-  ) {
+  if (manifestJson.plus.renderer === 'native') {
     appJson.renderer = 'native'
   } else {
     appJson.renderer = 'auto'
@@ -376,7 +373,11 @@ module.exports = function (pagesJson, userManifestJson) {
 
   manifestJson.plus['uni-app'].control = control
   manifestJson.plus['uni-app'].nvueCompiler = appJson.nvueCompiler
-  manifestJson.plus['uni-app'].renderer = appJson.renderer
+  // v3 + native 时强制 auto
+  manifestJson.plus['uni-app'].renderer = process.env.UNI_USING_V3_NATIVE
+    ? 'auto'
+    : appJson.renderer
+
   if (flexDir) {
     manifestJson.plus['uni-app'].nvue = {
       'flex-direction': flexDir