v-combobox doesn't trigger input correctly

As reported in https://codebase.helmholtz.cloud/hub-terra/sms/service-desk/-/issues/22, the v-combobox doesn't trigger the input event immediately when the user enters text. Thus, when the user enters text and clicks another element (for example a save button), the other event is triggered before the input event of the combobox.

This issue is known here https://github.com/vuetifyjs/vuetify/issues/4679.