Introduce schemas for map key constraints #2396

Job	Run time
ClojureScript (none)	3m 1s
Babashka	28s
ClojureScript (advanced)	3m 17s
Clojure 11 (Java 8)	1m 3s
ClojureScript (cherry-none)	3m 27s
Clojure 12 (Java 8)	1m 3s
ClojureScript (cherry-advanced)	3m 22s
Clojure 11 (Java 11)	1m 8s
Clojure 12 (Java 11)	1m 2s
Clojure 11 (Java 17)	52s
Clojure 12 (Java 17)	52s
Clojure 11 (Java 21)	50s
Clojure 12 (Java 21)	1m 4s
	21m 29s

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