Change nbb project identifier to nbb.edn

Also fixes unrelated osx test failure with overlays introduced some days ago.

Author: ikappaki

cider.el

@@ -1704,7 +1704,7 @@ PROJECT-DIR defaults to current project."
                         (shadow-cljs . "shadow-cljs.edn")
                         (gradle      . "build.gradle")
                         (gradle      . "build.gradle.kts")
-                        (nbb         . "package.json"))))
+                        (nbb         . "nbb.edn"))))
     (delq nil
           (mapcar (lambda (candidate)
                     (when (file-exists-p (cdr candidate))

test/cider-overlay-tests.el

@@ -72,6 +72,9 @@ being set that way"
 (describe "cider--make-result-overlay"
   :var (overlay-count this-command)
 
+  (after-each
+   (setq this-command nil))
+
   (before-all
     (fset 'overlay-count (lambda ()
                            (save-excursion