fix: handle async placeholders in normalizeScopedSlot (#11963)
fix: handle async placeholders in normalizeScopedSlot (#11963)

Co-authored-by: Eduardo San Martin Morote <c2fb81ad7fdf376cab654d8147817241d9d9d0a2@users.noreply.github.com>
vuejs/vue,Jinjiang/vue,vuejs/vue,vuejs/vue,Jinjiang/vue,Jinjiang/vue,Jinjiang/vue,vuejs/vue