Find definition doesn't work on cljs macros that definition comes from clj/cljc files

[ericdallo]

https://clojurians.slack.com/archives/CPABC1H61/p1652531342831589

Repro : Try to find definition of reagent/with-let here

It seems related with clj-kondo not returning a var-definition for that macro on the reagent.core cljs ns which probably makes sense since the macro exists only on JVM side.

We could:

• make clj-kondo return any info that would say that macro is defined on other ns
• make clojure-lsp try to find the definition on JVM file (the reagent.core clj ns)