don't try to clj expand in cljs block

This is harmful now, e.g. it loads the test namespace clj side even when
not needed. The cljs expander code should take care of the expansion.

src/hyperfiddle/electric/impl/expand.clj

@@ -43,7 +43,7 @@
                 (let [cljs-macro-env (cond-> cljs-env (::ns cljs-env) (assoc :ns (::ns cljs-env)))]
                   (if-some [expander (cljs-ana/get-expander f cljs-macro-env)]
                     (apply expander o cljs-macro-env args)
-                    (macroexpand-clj o)))))
+                    o))))
             (macroexpand-clj o)))))))
 
 (defn find-local [env sym] (find (:locals env) sym))