fix(VSelect): add call blur method in onBlur

[yanskun]

Description

fixes #15839

VSelect's onBlur fires when clicking on a Disabled Item, but the VSelect never closes, so fixed it to close.

Motivation and Context

Users will be confused if one of the following measures is not taken

1. Incorporate this fix to close the VSelect when clicking a disabled item
2. Prevent onBlur from firing when a disabled item is clicked

In the case of 2, another response is required, so please let me know if that is acceptable.
because I want to fix

How Has This Been Tested?

2022-10-16.22.28.34.mov

Markup:

<template>
  <v-container>
    <span>Blur count: {{ blurCount }}</span>
    <v-select
      :items="items"
      multiple
      @blur="onBlur"
    ></v-select>
  </v-container>
</template>

<script>
  export default {
    data: () => ({
      blurCount: 0,
      items: [
        { text: 'Text 1', value: 1, disabled: false },
        { text: 'Text 2', value: 2, disabled: true },
      ],
    }),
    methods: {
      onBlur () {
        this.blurCount++
      },
    },
  }
</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)

[KaelWD]

The menu should not close if a disabled item is clicked

[yanskun]

@KaelWD

The menu should not close if a disabled item is clicked

really?
In my local, it closed successfully.

hmm,

2023-01-09.20.12.36.mov

By "disabled item" do you mean items with disabled: true?

[KaelWD]

In my local, it closed successfully

Yeah that's what I meant, it shouldn't do that