titleclip: Expose draw-shadow child property
For context: The draw-shadow child property needed to be exposed for Pitivi Issue #1860.
The problem was that Pitivi was unable to access the draw-shadow property, which was required for our feature.
For context: The draw-shadow child property needed to be exposed for Pitivi Issue #1860.
The problem was that Pitivi was unable to access the draw-shadow property, which was required for our feature.