fix(VSlider): remove attributes inherit from thumb container

[yuwu9145]

fixes #14010

Description

resolves #14010

Motivation and Context

resolves #14010

How Has This Been Tested?

visually

Markup:

Details

// Paste your FULL Playground.vue here
<template>
  <v-container>
    <h4>VSlider inherit is wrong</h4>
    <p>[data-test="slider"] count: {{sliderCount}}</p>
    <v-slider data-test="slider" />
    <h4>VSwitch inherit is correct</h4>
    <p>[data-test="switch"] count: {{switchCount}}</p>
    <v-switch data-test="switch" />
  </v-container>
</template>

<script>
export default {
  data: () => ({
    sliderCount: 0,
    switchCount: 0
  }),
  mounted () {
    this.sliderCount = document.querySelectorAll('[data-test="slider"]').length
    this.switchCount = document.querySelectorAll('[data-test="switch"]').length
  }
};
</script>

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)

[yuwu9145]

Looks like the only purpose of non-prop attributes inherit here is for making sure aria-label takes highest precedence over label prop.

In addition, with this change applied, all events (focus, blur and keydown on thumb) from ThumbContainer are consistent