Add commennt to event change

apps/browser/src/autofill/overlay/inline-menu/pages/list/autofill-inline-menu-list.ts

@@ -552,6 +552,8 @@ export class AutofillInlineMenuList extends AutofillInlineMenuPageElement {
     this.newItemButtonElement.setAttribute("aria-label", this.getNewItemAriaLabel(showLogin));
     this.newItemButtonElement.prepend(buildSvgDomElement(plusIcon));
     this.newItemButtonElement.addEventListener(
+      // Use mousedown instead of click for immediate response - necessary for some sites where
+      // the click event arrives too late.
       EVENTS.MOUSEDOWN,
       this.handleNewLoginVaultItemAction,
     );