test: `@PHP82Migration:risky` - add integration tests #1667

Job	Run time
Entrypoint low-PHP compat	8s
PHP 7.4 Fixer with lowest deps	49s
PHP 7.4 tests with lowest deps	2m 54s
PHP 8.0 Fixer	43s
PHP 8.0 tests	3m 6s
PHP 8.1 Fixer with Symfony ^6	57s
PHP 8.1 tests with Symfony ^6	3m 46s
PHP 8.2 Fixer	52s
PHP 8.2 tests	3m 45s
PHP 8.3 Fixer	43s
PHP 8.3 tests	3m 27s
PHP 8.3 Fixer with migration rules	1m 12s
PHP 8.3 tests with migration rules	3m 58s
PHP 8.3 Fixer with Symfony ^7	56s
PHP 8.3 tests with Symfony ^7	3m 42s
PHP 8.3 code coverage	4m 51s
PHP 8.3 mutation tests	17s
PHP 8.3 Fixer on Windows	1m 39s
PHP 8.3 tests on Windows	2m 25s
PHP 8.3 Fixer on macOS	1m 34s
PHP 8.3 tests on macOS	1m 59s
PHP 8.4 Fixer	42s
PHP 8.4 tests	3m 39s
Deployment checks	34s
	48m 38s

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