ENH Align ArrayList case sensitivity with other lists #2129

Job	Run time
CI / Generate matrix	12s
CI / Context	1s
CI / Check governance	1s
CI / 8.3 prf-low mariadb phpunit framework-core	6m 12s
CI / 8.3 mysql80 phpunit framework-core	7m 40s
CI / 8.4 mysql84 phpunit framework-core	8m 6s
CI / 8.3 prf-low mariadb phpunit framework-orm	12m 7s
CI / 8.3 mysql80 phpunit framework-orm	14m 15s
CI / 8.4 mysql84 phpunit framework-orm	13m 28s
CI / 8.3 mysql80 phplinting	2m 41s
CI / 8.3 mysql80 phpunit framework-cache-only inmemorycache	1m 51s
CI / Dispatch tag patch release	0s
	1h 6m 34s

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