drm/nouveau: Do not override forced connector status

[ Upstream commit 01f1d77a2630e774ce33233c4e6723bca3ae9daa ]

Keep user-forced connector status even if it cannot be programmed. Same
behavior as for the rest of the drivers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250114100214.195386-1-tzimmermann@suse.de


Signed-off-by: Sasha Levin <sashal@kernel.org>