fix(VSelect): fix VSelect behavior when switching to another tab

[dsseng]

Description

V-select should close when it loses focus or user switches to another tab.

Motivation and Context

Fixes #5774

How Has This Been Tested?

visually

Markup:

// Paste your FULL Playground.vue here<template>
  <v-app>
    <v-card>
      <v-container
        fluid
        grid-list-xl
      >
        <v-layout
          align-center
          wrap
        >
          <v-flex xs12 sm6>
            <v-select
              v-model="value"
              :items="items"
              attach
              chips
              label="Chips"
              multiple
            ></v-select>
          </v-flex>
          <v-flex xs12 sm6>
            <v-select
              v-model="value"
              :items="items"
              box
              chips
              label="Chips"
              multiple
            ></v-select>
          </v-flex>
          <v-flex xs12 sm6>
            <v-select
              v-model="value"
              :items="items"
              chips
              label="Chips"
              multiple
              outline
            ></v-select>
          </v-flex>
          <v-flex xs12 sm6>
            <v-select
              v-model="value"
              :items="items"
              chips
              label="Chips"
              multiple
              solo
            ></v-select>
          </v-flex>
        </v-layout>
      </v-container>
    </v-card>
  </v-app>
</template>

<script>
  export default {
    data: () => ({
      items: ['foo', 'bar', 'fizz', 'buzz'],
      value: ['foo', 'bar', 'fizz', 'buzz']
    })
  }
</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 feature but make 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 breaking 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)

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[codecov]

Codecov Report

Merging #5780 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #5780      +/-   ##
==========================================
+ Coverage   89.07%   89.11%   +0.03%     
==========================================
  Files         262      262              
  Lines        5922     5923       +1     
  Branches     1467     1467              
==========================================
+ Hits         5275     5278       +3     
+ Misses        531      530       -1     
+ Partials      116      115       -1

Impacted Files	Coverage Δ
packages/vuetify/src/components/VSelect/VSelect.js	88.53% <100%> (+0.05%)	⬆️
...tify/src/components/VAutocomplete/VAutocomplete.js	100% <0%> (+1.83%)	⬆️

---

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[codecov]

Codecov Report

Merging #5780 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #5780      +/-   ##
==========================================
+ Coverage   89.07%   89.11%   +0.03%     
==========================================
  Files         262      262              
  Lines        5923     5924       +1     
  Branches     1468     1468              
==========================================
+ Hits         5276     5279       +3     
+ Misses        531      530       -1     
+ Partials      116      115       -1

Impacted Files	Coverage Δ
packages/vuetify/src/components/VSelect/VSelect.js	88.53% <100%> (+0.05%)	⬆️
...tify/src/components/VAutocomplete/VAutocomplete.js	100% <0%> (+1.83%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 01c1ac8...6b79ed5. Read the comment docs.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. Please direct any non-bug questions to our Discord