fix: configuration should be synced regardless of $_init

fixes #2521
fixes #2522

Author: haoqunjiang

packages/@vue/cli-ui/src/views/ProjectConfigurationDetails.vue

@@ -107,15 +107,13 @@ export default {
           id: this.id
         }
       },
-      manual: true,
       async result ({ data, loading }) {
         if (!this.$_init && !loading && data && data.configuration) {
           this.$_init = true
           this.tabsHaveChanges = data.configuration.tabs.reduce((obj, tab) => {
             obj[tab.id] = false
             return obj
           }, {})
-          this.configuration = data.configuration
           await this.$nextTick()
           this.currentTab = data.configuration.tabs[0].id
         }