Breaking: #81775 - suffix form identifier with the content element uid

See Issue #81775

Description

If a form is rendered through the "form" content element, the identifier of the form is modified with a suffix. The form identifier will be suffixed with "-$contentElementUid" (e.g. "myForm-65").

Impact

All form element names within the frontend will change from e.g.

<textarea name="tx_form_formframework[myForm][message]"></textarea>

to

<textarea name="tx_form_formframework[myForm-65][message]"></textarea>

if the form is rendered through the "form" content element.

Affected Installations

All instances, that render forms through the "form" content element.