Postpone Sanitizer deprecations

[ohader]

The deprecation introduced with PR #98 at

html-sanitizer/src/Sanitizer.php

Lines 93 to 98 in 703dded

	if (!$this->behavior instanceof Behavior) {
	trigger_error(
	'Add `Behavior` when creating new `Sanitizer` instances, e.g. `new Sanitizer($behavior, $visitor)`',
	E_USER_DEPRECATED
	);
	}

has to be postponed to a later release, since chances are high that it leads to more trouble in individual build processes, e.g. like https://git.typo3.org/typo3/CI/cms/-/pipelines/34627