openh264dec: Fix input state handling and propagation of upstream caps fields
openh264dec: Fix input state handling and propagation of upstream caps fields

deepikateriar/openwebrtc-plugins-0.80,ford-prefect/openwebrtc-gst-plugins,ossy-szeged/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.8,EricssonResearch/openwebrtc-gst-plugins,ossy-szeged/openwebrtc-gst-plugins,sancane/openwebrtc-gst-plugins,sancane/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.80,sancane/openwebrtc-gst-plugins,EricssonResearch/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.8,ford-prefect/openwebrtc-gst-plugins,ford-prefect/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.80,ossy-szeged/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.8,ossy-szeged/openwebrtc-gst-plugins,deepikateriar/openwebrtc-plugins-0.8,deepikateriar/openwebrtc-plugins-0.80,EricssonResearch/openwebrtc-gst-plugins,ford-prefect/openwebrtc-gst-plugins