[TASK] Add code migration to adjust templates to Fluid 1.1
[TASK] Add code migration to adjust templates to Fluid 1.1

This changes form.textbox to form.textfield in HTML files.

Change-Id: Ib4743a82e1e0a5a721dee04cd0a7a800e452fdd9
Related: #29389
Original-Commit-Hash: 214c79a4470453ccfa6e0fb8dc979ad3cb85e109

neos/fluid,neos/fluid