gstreamer1: enable build options necessary for most applications

gstreamer1: enable build options necessary for most applications

Commit cb058bf changed gstreamer1's build options, and this broke some
applications.

First, -Doption-parsing=false is intended for very specific embedded
applications rather general packages. Please see:

https://github.com/openwrt/packages/pull/8847
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/388

Second, -Dregistry=false seems to break plugin discovery. Symptoms of
this include broken applications and gst-inspect-1.0 listing zero plugins.

Fixes #13180.

Signed-off-by: W. Michael Petullo <mike@flyn.org>