fix: properly mark slot rendered flag in production mode
fix: properly mark slot rendered flag in production mode

fix #6997

KingMario/vue,KingMario/vue,Jinjiang/vue,Hanks10100/vue,vuejs/vue,cnchanning/vue,Kingwl/vue,Hanks10100/vue,vuejs/vue,Jinjiang/vue,Jinjiang/vue,Kingwl/vue,Jinjiang/vue,Hanks10100/vue,Kingwl/vue,Hanks10100/vue,vuejs/vue,KingMario/vue,vuejs/vue,cnchanning/vue,cnchanning/vue,KingMario/vue,Kingwl/vue