fix(VTextField/VSelect): don't focus clear icon if dirty

[jacekkarczmarczyk]

How Has This Been Tested?

jest, playground

Markup:

<template>
  <v-container>
    <v-file-input />
    <v-text-field />
    <v-text-field clearable />
    <v-select :items="['foo']" clearable />
    <v-autocomplete :items="['foo']" clearable />
    <v-combobox :items="['foo']" clearable />
  </v-container>
</template>

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Improvement/refactoring (non-breaking change that doesn't add any features but makes things better)

Checklist:

• The PR title is no longer than 64 characters.
• The PR is submitted to the correct branch (master for bug fixes and documentation updates, dev for new features and backwards compatible changes and next for non-backwards compatible changes).
• My code follows the code style of this project.
• I've added relevant changes to the documentation (applies to new features and breaking changes in core library)

[KaelWD]

This whole thing was a mistake anyway, it should only apply to the default append icon.

[KaelWD]

#10489