Refactoring test

[askdkc]

testbench-coreでLaravel 12は.envやconfig/app.phpがlaravel/laravelとlaravel/frameworkとで同一だから無問題なのだが、Laravel 11は.envやconfig/app.phpがlaravel/laravelとlaravel/frameworkとで異なる問題がある

なのでLaravel12は普通のテストにリファクタリング可能だが、Laravel 11は11用のconfig/app.phpをテスト環境のスケルトンに準備する動きをそのままとする

[what-the-diff]

PR Summary

• Simplified File Handling for Different Laravel Versions
  We removed a section from our code that was previously required for different Laravel versions (12 and below). This streamlines the process and makes things simpler.

• Easier app.php File Creation
  We've enhanced how we create an app.php file. Now, the system consistently copies this from the laravel11/app.php file, resulting in a more efficient process.

• Locale Reset Code Removal from config/app.php
  Code responsible for resetting the locale to English ('en') in the config/app.php file has been taken out. This could possibly lead to a more personalized usage experience, according to the user’s locale preference.