chore: refactor dropdown to use Popover; fix tests

Author: josemarluedke

packages/collections/package.json

@@ -46,8 +46,7 @@
     "@frontile/overlays": "workspace:0.17.0-alpha.5",
     "@frontile/theme": "workspace:0.17.0-alpha.5",
     "@frontile/utilities": "workspace:0.17.0-alpha.5",
-    "ember-modifier": "^4.1.0",
-    "ember-velcro": "^2.1.3"
+    "ember-modifier": "^4.1.0"
   },
   "devDependencies": {
     "@babel/core": "7.23.7",