[internal] tidy up just changed arrow function comments, move above full arrow function, as standard #31743

Job	Run time
Preload php-parser Order	19s
Composer Validate	22s
Help and Version	28s
Commented Code	23s
Compatible PHPStan versions	26s
Finalize classes	23s
Check before/after test fixture on no-changes	18s
Active Classes	26s
PHPStan	1m 31s
Run with Space in Directory	28s
Check no "*.php" files in rules Fixture directory	18s
Detect composer dependency issues	22s
Check fixture classes are different to nodes	18s
PHP Linter	28s
	6m 30s

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