ENH Use FieldValidators for FormField validation #3359

Job	Run time
CI / Generate matrix	14s
CI / Context	1s
CI / 8.3 prf-low mariadb phpunit framework-core	1m 43s
CI / 8.3 mysql80 phpunit framework-core	1m 31s
CI / 8.3 mysql84 phpunit framework-core	1m 36s
CI / Check governance	0s
CI / 8.3 prf-low mariadb phpunit framework-orm	2m 8s
CI / 8.3 mysql80 phpunit framework-orm	1m 35s
CI / 8.3 mysql84 phpunit framework-orm	1m 56s
CI / 8.3 mysql80 phplinting	2m 19s
CI / 8.3 mysql80 phpunit framework-cache-only inmemorycache	1m 54s
CI / Dispatch tag patch release	0s
	14m 57s

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