ENH Improve type safety to support refactored template layer (#3010) #962

Job	Run time
CI / Context	1s
CI / Generate matrix	10s
CI / Check governance	1s
CI / 8.3 prf-low mariadb phpunit all	2m 36s
CI / 8.3 mysql80 phpunit all	2m 56s
CI / 8.3 mysql80 phplinting	1m 28s
CI / 8.3 mysql80 endtoend root job1	8m 27s
CI / 8.3 mysql80 endtoend root job2	6m 51s
CI / 8.3 mysql80 endtoend root job3	6m 37s
CI / 8.3 mysql80 js	3m 55s
CI / Dispatch tag patch release	3s
	33m 5s

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