fix(v-autocomplete): avoid search reset
fix(v-autocomplete): avoid search reset

if searching, should not reset search when items change

fixes #4273

(cherry picked from commit 8688bde9a392b8624a0c0ac428de5cef505098f6)

Phlow2001/vuetify,vuetifyjs/vuetify,Phlow2001/vuetify,Webifi/vuetify,Webifi/vuetify,Phlow2001/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,Webifi/vuetify,Phlow2001/vuetify