UPnP discovery: Evaluate "TotalMatches" and "NumberReturned"

Browse again with increased "StartingIndex" and adapted "RequestCount".
    Solves
    #21381 Panasonic Viera returns maximal 20 items on uPnP
    #22496 DLNA/UPnP - Panasonic recorder 12 records limit

Fixes #15876

Signed-off-by: Felix Paul Kühne <felix@feepk.net>
Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>
(cherry picked from commit a1ef204f51c9b7bd3881931305c140c519081a6e)