Tests

[FEATURE] Allow modifying a single variable in `BeforeRenderingEvent` #1483

Job	Run time
Test coverage	38s
Tests (PHP 8.2, TYPO3 12.4 & highest dependencies)	21s
Tests (PHP 8.2, TYPO3 12.4 & lowest dependencies)	20s
Tests (PHP 8.3, TYPO3 12.4 & highest dependencies)	22s
Tests (PHP 8.3, TYPO3 12.4 & lowest dependencies)	18s
Tests (PHP 8.4, TYPO3 12.4 & highest dependencies)	31s
Tests (PHP 8.4, TYPO3 12.4 & lowest dependencies)	26s
Report test coverage	14s
	3m 10s

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