Dropdown menu native form submit

[markocupic024]

Closes #3789

Description

Previously, this could be submitted with keyboard navigation:

import { DropdownMenu } from '@radix-ui/react-dropdown-menu';
 function Example() {
  return (
    <>
      <DropdownMenu.Root>
        <DropdownMenu.Trigger>Open</DropdownMenu.Trigger>
        <DropdownMenu.Content>
          <DropdownMenu.Item asChild>
            {/* Does NOT submit the form */}
            <button type="submit" form="my-form">Submit</button>
             {/* Adding onClick={() => {}} DOES submit the form */}
            {/* <button type="submit" form="my-form" onClick={() => {}}>Submit</button> */}
          </DropdownMenu.Item>
        </DropdownMenu.Content>
      </DropdownMenu.Root>
       <form id="my-form" action="/submit" method="post" />
    </>
  );
}

But using mouse to click did not work.

[changeset-bot]

🦋 Changeset detected

Latest commit: 0c41505

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@radix-ui/react-menu	Patch
@radix-ui/react-context-menu	Patch
@radix-ui/react-dropdown-menu	Patch
@radix-ui/react-menubar	Patch
radix-ui	Patch

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