Added picture to isHTMLTag map (#5675)
Added picture to isHTMLTag map (#5675)

This change will make sure the below error is not seen while unit testing components using <picture> in their template.
[Vue warn]: Unknown custom element: <picture> - did you register the component correctly? For recursive components, make sure to provide the "name" option.
lizhiyao/vue,vuejs/vue,Kingwl/vue,xueyaodeai/vue,vuejs/vue,cnchanning/vue,lizhiyao/vue,vuejs/vue,Ddder-FE/vue,cnchanning/vue,KingMario/vue,Hanks10100/vue,Kingwl/vue,cnchanning/vue,vuejs/vue,optimizely/vue,Ddder-FE/vue,Ddder-FE/vue,Jinjiang/vue,Hanks10100/vue,KingMario/vue,lizhiyao/vue,Ddder-FE/vue,Kingwl/vue,Jinjiang/vue,xueyaodeai/vue,Hanks10100/vue,KingMario/vue,KingMario/vue,Jinjiang/vue,lizhiyao/vue,Kingwl/vue,Jinjiang/vue,xueyaodeai/vue,Hanks10100/vue,xueyaodeai/vue