[Bug Report] v-text-field + filled (v-slot:label not working)

[Dinver]

Environment

Vuetify Version: 2.2.30
Vue Version: 2.6.11
Browsers: Chrome 83.0.4103.61
OS: Windows 10

Steps to reproduce

Add prop "filled" in v-text-field;
Add v-slot:label.

Expected Behavior

Same as without filled.

Actual Behavior

No functionality.

Reproduction Link

https://codepen.io/dinver/pen/oNbvxJM?editable=true&editors=101%3Dhttps%3A%2F%2Fvuetifyjs.com%2Fen%2Fcomponents%2Ftext-fields%2F

[jacekkarczmarczyk]

works fine if you add label="anything"

[Dinver]

works fine if you add label="anything"

May be need write in documentation? I did not find such a description prop.

[KaelWD]

Scoped slots don't exist until render() in vue 2: https://codepen.io/kaelwd/pen/rNLNYGL?editors=1011
This seems to be fixed in vue 3: https://codepen.io/kaelwd/pen/gOMOXoB?editors=1011

If you use slot="label" instead of v-slot="label" then it works without the label prop.

this.$slots.label is accessed before render by labelValue watcher -> labelValue -> isSingle -> hasLabel