The form page type (/form, 1704) existed because on the static pages of the
hybrid setup the page URL never reached TYPO3. With static rendering
retired, forms post to the page they are on, like the newsletter form:
the additionalParams in FormSetup.yaml, Page/Form.typoscript and the /form
entries of the PageType enhancers are gone.
Each form island gets the id form-island-<form identifier> (EXT:form
appends the content element uid), and Form.html targets and selects that
id instead of .form-island. With two forms on one page, a submission no
longer swaps in the first form's island.
Kept: hx-boost on the forms, HtmxRedirectMiddleware (Redirect finishers
under htmx) and /captcha (bw_captcha's image type).
Co-Authored-By: Claude Opus 5.5 <[email protected]>