API Add ValidationInterface to Form #2112

Job	Run time
CI / Context	1s
CI / Generate matrix	16s
CI / Check governance	1s
CI / 8.3 prf-low mariadb phpunit framework-core	6m 18s
CI / 8.3 mysql80 phpunit framework-core	8m 23s
CI / 8.4 mysql84 phpunit framework-core	7m 45s
CI / 8.3 prf-low mariadb phpunit framework-orm	12m 38s
CI / 8.3 mysql80 phpunit framework-orm	14m 28s
CI / 8.4 mysql84 phpunit framework-orm	13m 48s
CI / 8.3 mysql80 phplinting	2m 26s
CI / 8.3 mysql80 phpunit framework-cache-only inmemorycache	2m 9s
CI / Dispatch tag patch release	0s
	1h 8m 13s

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