In the Dope Sheet and the Timeline, it was possible to drag the view until the keyframes were completely out of view.
(Important to drag in the region with the keyframes, dragging in the channel box already did clamping)
This patch adds a clamping mechanism matching that of the channel box. That means the last channel will stick to the bottom of the view.
Co-authored-by: Christoph Lendenfeld <chris.lenden@gmail.com>
Pull Request #104516
cb95f8aea7