fix(VSelect): make CSS order-independent

[haggys22]

Description

Fix #13149

Motivation and Context

#13149

How Has This Been Tested?

visually

Markup:

<v-app>
  <v-container>
    <v-row>
      <v-col>
        <v-text-field
            label="v-text-field"
            filled
        ></v-text-field>
      </v-col>  
      <v-col>
        <v-select
            label="v-select"
            filled
        ></v-select>
      </v-col>  
      <v-col>
        <v-autocomplete
            label="v-autocomplete"
            filled
        ></v-autocomplete>
      </v-col>  
    </v-row>
  </v-container>
</v-app>

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)