Fixes updating the flags in the imap backend. Before, the silent flag
was set incorrectly by 75fc42e ("imap: send message info updates for
bulk flag ops") which caused some imap servers to not send the updated
flags. By disabling the silent flag, the flag update will return a
corrsponding value that we can send back to the message store to update
the flags correctly.
Fixes: 75fc42e ("imap: send message info updates for bulk flag ops")
Reported-by: Jens Grassel <jens@wegtam.com>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Jens Grassel <jens@wegtam.com>
Acked-by: Robin Jarry <robin@jarry.cc>