Form submit in non-LiveView page should be classified as :full_page

[pinetops]

Problem

A <button type="submit"> inside a plain HTML form (no phx-submit) is classified as :none by classify_interaction. When the form submit triggers a full page navigation to a LiveView page, wallabidi doesn't wait for the page load or LiveView connection.

Impact

After clicking "Continue to Teamology" (plain form submit → redirect to /school LiveView), the next interaction — click(Query.css("[id='#profile-menu-button']")) — fires before LiveSocket connects. The button's phx-click={JS.toggle(...)} binding isn't active yet, so the dropdown doesn't open.

Current workaround

teacher
|> assert_has(Query.css(".phx-connected"))  # wait for LiveSocket
|> click(Query.css("[id='#profile-menu-button']"))

Suggested fix

In check_phx_binding / check_phx_binding_xpath, if the element is a submit button inside a <form> (even without phx-submit), classify as :full_page:

if (type === 'click') {
  // ... existing phx-click checks ...
  
  // Submit button inside any form → full page navigation
  if (el.type === 'submit' || el.tagName === 'BUTTON') {
    var form = el.closest('form');
    if (form && form.getAttribute('phx-submit')) return 'patch';
    if (form) return 'full_page';  // non-LiveView form submit
  }
  
  // ... existing anchor checks ...
}

This ensures await_page_load + await_liveview_connected run after the form submit, so the next page's LiveSocket is connected before subsequent interactions.