fix: resolve async component default for native dynamic import
fix: resolve async component default for native dynamic import

fix #6751

vuejs/vue,Ddder-FE/vue,lizhiyao/vue,Jinjiang/vue,KingMario/vue,vuejs/vue,Jinjiang/vue,lizhiyao/vue,Kingwl/vue,Jinjiang/vue,vuejs/vue,Kingwl/vue,lizhiyao/vue,Kingwl/vue,lizhiyao/vue,Ddder-FE/vue,KingMario/vue,KingMario/vue,vuejs/vue,Hanks10100/vue,Jinjiang/vue,Kingwl/vue,KingMario/vue,cnchanning/vue,Ddder-FE/vue,Hanks10100/vue,cnchanning/vue,Hanks10100/vue,Ddder-FE/vue,cnchanning/vue,Hanks10100/vue,optimizely/vue