API Explicity mark nullable parameters for PHP 8.4 #1052

Job	Run time
CI / Context	1s
CI / Generate matrix	16s
CI / 8.3 prf-low mariadb phpunit all	2m 53s
CI / Check governance	0s
CI / 8.3 mysql80 phpunit all	3m 20s
CI / 8.3 mysql84 phpunit all	2m 54s
CI / 8.3 mysql80 phplinting	1m 56s
CI / 8.3 mysql80 endtoend root job1	8m 44s
CI / 8.3 mysql80 endtoend root job2	8m 49s
CI / 8.3 mysql80 endtoend root job3	7m 30s
CI / 8.3 mysql80 js	4m 44s
CI / Dispatch tag patch release	0s
	41m 7s

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