Select the first message with NextPrev when the cursor disappears after
applying a filter where the selected message is not part of. Currently,
the NextPrev would select the last message in the mailbox (like a G
jump).
To reproduce:
1) select a message
2) apply a filter where the selected message is not selected
3) move the cursor and it will jump to the last message
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>