fix(VInput): focus and Interactivity of Icon in prepend Slot for File Picker #20027

Job	Run time
pre_job	6s
Test (e2e)	5m 3s
Test (Unit)	47s
Build vuetify	1m 52s
Lint (--scope vuetify --scope @vuetify/api-generator)	56s
Lint (--scope vuetifyjs.com)	4m 20s
Build docs	0s
publish-docs	0s
deploy	0s
	13m 4s

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