proresdec: support mixed interlaced/non-interlaced content

Set interlaced to false if we don't have an interlaced frame

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit 0881cbf314982cce8448bd12644ce2a6e0b8c576)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit 1fa37f2bfa0f5c50ce61dedf2bbb772d96d71101)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
update Changelog