[Autocomplete] Initial render with a value set always causes input label to perform the shrink animation

[ShotSkydiver]

Steps to reproduce

Steps:

1. Open this link to live example: https://codesandbox.io/p/sandbox/stoic-fire-zz67mz-zz67mz?from-embed=&workspaceId=edc4f89e-5831-4c48-b5ed-57fcd105b256
2. Click show/hide autocomplete button
3. Watch the input label do its shrink animation despite there being a value set initially

Current behavior

When providing a value to Autocomplete, on initial render it'll animate the input label shrinking as if a value was entered after the component was rendered, which gets extra visually annoying when having large groups of autocomplete fields that are contained within Steps or show/hide buttons

Expected behavior

The input label is already shrunk at initial render without any animation, like it is for TextField, Select, etc

Context

N/A

Your environment

npx @mui/envinfo

    System:
    OS: macOS 15.2
  Binaries:
    Node: 23.2.0 - /opt/homebrew/bin/node
    npm: 10.9.0 - /opt/homebrew/bin/npm
    pnpm: Not Found
  Browsers:
    Chrome: Not Found
    Edge: Not Found
    Safari: 18.2
  npmPackages:
    @emotion/react: 11.13.3 => 11.13.3 
    @emotion/styled: 11.13.0 => 11.13.0 
    @mui/base: 5.0.0-beta.61 => 5.0.0-beta.61 
    @mui/codemod: 6.1.7 => 6.1.7 
    @mui/core-downloads-tracker:  6.1.4 
    @mui/icons-material: 6.1.7 => 6.1.7 
    @mui/lab: 6.0.0-beta.15 => 6.0.0-beta.15 
    @mui/material: 6.1.7 => 6.1.7 
    @mui/private-theming:  6.1.7 
    @mui/styled-engine:  6.1.4 
    @mui/styles: 6.1.7 => 6.1.7 
    @mui/system: 6.1.7 => 6.1.7 
    @mui/types:  7.2.19 
    @mui/utils:  6.1.4 
    @mui/x-charts: 7.22.2 => 7.22.2 
    @mui/x-charts-vendor:  7.20.0 
    @mui/x-data-grid: 7.22.2 => 7.22.2 
    @mui/x-date-pickers: 7.22.2 => 7.22.2 
    @mui/x-internals:  7.21.0 
    @types/react:  18.3.11 
    react: 18.3.1 => 18.3.1 
    react-dom: 18.3.1 => 18.3.1 

Search keywords: autocomplete shrink animation initial value