[Php70] Allow is_null() conversion on TernaryToNullCoalescingRector with parentheses handling #32444

Job	Run time
Avoid duplicate short class names	19s
Preload php-parser Order	16s
Check before/after test fixture on no-changes	25s
PHP Linter	28s
Run with Space in Directory	18s
Commented Code	15s
Detect composer dependency issues	20s
Check fixture classes are different to nodes	25s
Composer Validate	18s
Help and Version	22s
PHPStan	56s
Check no "*.php" files in rules Fixture directory	17s
Finalize classes	25s
Compatible PHPStan versions	15s
Active Classes	20s
	5m 39s

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