Merge pull request rails#50165 from jonathanhefner/follow-up-48290-selector

Fix submit button selector for `type`-less buttons

Author: jonathanhefner

activestorage/app/assets/javascripts/activestorage.esm.js

@@ -15,9 +15,9 @@ export function start() {
 }
 
 function didClick(event) {
-  const submitButton = event.target.closest(":is(button, input)[type='submit']")
-  if (submitButton && submitButton.form) {
-    submitButtonsByForm.set(submitButton.form, submitButton)
+  const button = event.target.closest("button, input")
+  if (button && button.type === "submit" && button.form) {
+    submitButtonsByForm.set(button.form, button)
   }
 }