fix(VAutocomplete): Update dynamically when itemText is updated

[heidricklevi]

Closes #6368

Description

Motivation and Context

Addresses #6368

How Has This Been Tested?

visually

Markup:

// Paste your FULL Playground.vue here
<template>
<boilerplate>
 <v-card>
      <v-card-title class="headline font-weight-regular blue-grey white--text">Profile</v-card-title>
      <v-card-text>
        <v-subheader v-if="model" class="pa-0">
          Lang: {{ lang }},
          Model: {{ model }}, <br /><br />
          Items: {{ myItems }}
        </v-subheader>
        <v-select
          :items="langs"
          label="Parameter currentLang" v-model="lang"
        ></v-select>
        <v-autocomplete
          v-model="model"
          :items="myItems" :item-text="displayLabel"
          label="Autocomplete with translation"
          persistent-hint solo return-object
          prepend-icon="mdi-flag"
        >
        </v-autocomplete>
      </v-card-text>
    </v-card>
    </boilerplate>
</template>

<script>
  import Boilerplate from './Boilerplate'
  export default {
    components: {
      Boilerplate,
    },
    computed: {
     displayLabel() {
        return 'labels.' + this.lang
      }
    },
    data () {
      return {
        model: null,
        lang: null,
        myItems: [
          {
            id: 1,
            labels: { "1033": "ID 1 English", "1036": "ID 1 French" }
          },
          {
            id: 2,
            labels: { "1033": "ID 2 English", "1036": "ID 2 French" }
          },
        ],
        langs: [ 1033, 1036 ]
      }
    },
  }
</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)

[codecov]

Codecov Report

Merging #6431 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #6431      +/-   ##
==========================================
+ Coverage   84.56%   84.59%   +0.03%     
==========================================
  Files         297      297              
  Lines        7120     7121       +1     
  Branches     1764     1764              
==========================================
+ Hits         6021     6024       +3     
+ Misses       1014     1013       -1     
+ Partials       85       84       -1

Impacted Files	Coverage Δ
...tify/src/components/VAutocomplete/VAutocomplete.js	100% <100%> (+1.8%)	⬆️

---

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[jacekkarczmarczyk]

Can you also add unit tests for this?

[heidricklevi]

@jacekkarczmarczyk Yes, I will go ahead and do that

[dsseng]

Please add unit tests for this, otherwise LGTM

[heidricklevi]

I updated the PR and added in the necessary unit tests.

[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