Commit c300576d6c introduced
`confirm_blob_with_optional_pagination` which proved to be unpopular and
impractical. This commit brings back the old behaviour of having the
`ask_pagination` parameter on `confirm_blob`. It also reverts back to
using the old way of paginating `confirm_blob` on model R, which the
aforementioned commit ignored and re-implemented from scratch.
[no changelog]