Apply feedback request on `UserAlert::ff`
Apply feedback request on `UserAlert::ff`

Align struct `ff` as per commit
https://code.developers.mega.co.nz/sdk/sdk/-/commit/5e4f375bec8777a9749abc8248c6f58d50fa17df

meganz/sdk,meganz/sdk,meganz/sdk,meganz/sdk,meganz/sdk,meganz/sdk,meganz/sdk