Introduce schemas for map key constraints #2395

Job	Run time
Babashka	25s
Clojure 11 (Java 8)	2m 45s
ClojureScript (none)	2m 59s
Clojure 12 (Java 8)	2m 18s
ClojureScript (advanced)	3m 37s
Clojure 11 (Java 11)	58s
ClojureScript (cherry-none)	3m 31s
Clojure 12 (Java 11)	57s
ClojureScript (cherry-advanced)	3m 49s
Clojure 11 (Java 17)	50s
Clojure 12 (Java 17)	58s
Clojure 11 (Java 21)	51s
Clojure 12 (Java 21)	56s
	24m 54s

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