fix(VBtn): remove double exclamation mark for ripple value to apply a custom color

[EvgenyWas]

Description

fixes #20189

Markup:

<v-app>
    <v-container>
      <v-row class="py-12" justify="space-around">
        <v-btn icon="$vuetify" />
        <v-btn :ripple="{ class: 'text-red' }" variant="text">
          With red ripple
        </v-btn>
      </v-row>
    </v-container>
</v-app>