Consent form: move consumer name out of the write-grant checkbox title for consistency

On the item-by-item read ceremony (RequestApproveForm), each kind offers up to three optional ongoing-access checkboxes. The read-trust and write-trust boxes use an owner-voiced, first-person title ("Read my @kind items in the future without asking" / "Add or change my @kind items in the future without asking") and name the consumer only in the description. The middle write-grant box broke that pattern with "Let @consumer change the items I share above": it named the consumer in the title, redundantly, since its description already names the consumer ("...so @consumer can edit their contents").

Change

The write-grant title becomes "Change the items I share above", matching the owner-voiced phrasing of the boxes either side; the consumer stays named in the description only. French translation updated to match.