fix id check for already-extended components
fix id check for already-extended components

VimVincent/vue,bsn069/vue,15521316173/vue,likaiwalkman/vue,cheapsteak/vue,likaiwalkman/vue,JsAaron/vue,seedalpha/vue,WQuanfeng/vue,yuche/vue,th0r/vue,jRoadie/vue,fergaldoyle/vue,lazarofl/vue,AtChina/vue,WQuanfeng/vue,macroxing/vue,prosenjit-itobuz/vue,wangjun/vue,lovewitty/vue,endaaman/vue,gxr1020/vue,Alen-gao/vue,yuByte/vue,diermengdierme/vue,lazarofl/vue,beni55/vue,15521316173/vue,bsn069/vue,GloriaCHL/vue,zsh2938/vue,squallyan/vue,lepture/vue,meiwenhui/vue,JosephSilber/vue,cnbin/vue,gold3bear/vue,rohmad-st/vue,lishengzxc/vue,AtChina/vue,gxr1020/vue,lepture/vue,Erane/vue,coopsource/vue,meleslilijing/vue,cuhuak/vue,th0r/vue,zOxta/vue,rohmad-st/vue,ke-pan/vue,ke-pan/vue,Jonavin/vue,haner199401/vue,lovewitty/vue,JosephSilber/vue,wangjun/vue,seedalpha/vue,meleslilijing/vue,karevn/vue,fergaldoyle/vue,shupan123/vue-fixed-type,jhaesus/vue,jwdeitch/vue,elvinzhu/vue,noyobo/vue,Suixinlei/vue,Jonavin/vue,cgvarela/vue,coopsource/vue,kazupon/vue,JsAaron/vue,Endika/vue,galenyuan/vue,shupan123/vue-fixed-type,zOxta/vue,endaaman/vue,cnbin/vue,prosenjit-itobuz/vue,meiwenhui/vue,jhaesus/vue,jRoadie/vue,jwdeitch/vue,zsh2938/vue,shupan123/vue-fixed-type,beni55/vue,echoZQ/vue,haner199401/vue,Zeratul5/vue,diermengdierme/vue,echoZQ/vue,kazupon/vue,Endika/vue,noyobo/vue,cuhuak/vue,VimVincent/vue,Alen-gao/vue,karevn/vue,Iamlars/vue,Suixinlei/vue,th0r/vue,Endika/vue,karevn/vue,galenyuan/vue,seedalpha/vue,longjl/vue,lepture/vue,fergaldoyle/vue,PUSEN/vue,longjl/vue,Iamlars/vue,macroxing/vue,yuche/vue,elvinzhu/vue,Zeratul5/vue,cgvarela/vue,yuByte/vue,KuroGuo/vue,gold3bear/vue,galenyuan/vue,cheapsteak/vue,squallyan/vue,diermengdierme/vue,Erane/vue,GloriaCHL/vue,KuroGuo/vue,lishengzxc/vue,PUSEN/vue