feat: accept vectors of size 2 in addition to MapEntry in unparse #2335

Job	Run time
Babashka	26s
Clojure 11 (Java 8)	52s
ClojureScript (none)	2m 37s
Clojure 12 (Java 8)	53s
ClojureScript (advanced)	3m 14s
Clojure 11 (Java 11)	53s
ClojureScript (cherry-none)	3m 25s
Clojure 12 (Java 11)	1m 1s
ClojureScript (cherry-advanced)	3m 22s
Clojure 11 (Java 17)	52s
Clojure 12 (Java 17)	51s
Clojure 11 (Java 21)	1m 0s
Clojure 12 (Java 21)	57s
	20m 23s

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