ENH Use new $SchemaAttributesHtml template property (#575) #566

Job	Run time
CI / Generate matrix	18s
CI / Context	1s
CI / Check governance	1s
CI / 8.3 prf-low mariadb phpunit all	2m 53s
CI / 8.3 mysql80 phpunit all	2m 26s
CI / 8.3 mysql84 phpunit all	2m 28s
CI / 8.3 mysql80 phplinting	1m 44s
CI / 8.3 mysql80 endtoend root	2m 48s
CI / 8.3 mysql80 js	4m 9s
CI / 8.3 mysql80 doclinting	2m 22s
CI / Dispatch tag patch release	4s
	19m 14s

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