GESTimelinePipeline: Also get static pads for static pads from encodebin.
GESTimelinePipeline: Also get static pads for static pads from encodebin.

This is for the cases where the provided GstStreamEncodingProfile has
a non-zero presence.

pitivi/gst-editing-services,freesteph/gst-editing-services,cfoch/gst-editing-services,cfoch/ges,luisbg/gst-editing-services,luisbg/gst-editing-services,cfoch/gst-editing-services,MathieuDuponchelle/PitiviGes,pitivi/gst-editing-services,ahmedammar/platform_external_gst_editing_services,volodymyrrudyi/gst-editing-services,volodymyrrudyi/gst-editing-services,pitivi/gst-editing-services,cfoch/ges,freesteph/gst-editing-services,cfoch/ges,MathieuDuponchelle/PitiviGes,cfoch/gst-editing-services,MathieuDuponchelle/PitiviGes,pitivi/gst-editing-services,cfoch/ges,cfoch/gst-editing-services,freesteph/gst-editing-services,ahmedammar/platform_external_gst_editing_services,MathieuDuponchelle/PitiviGes,volodymyrrudyi/gst-editing-services