Blender Git Loki

Fix T39851: F-curve noise modifier on a bone: change selection when modifying value

When the dopesheet was open, "keyframe edited" events from the graph editor
(i.e. fired whenever any properties on keyframes or FModifiers are changed)
would trigger the dopesheet to synchronise selection states of anim channels
and ensure that FCurve autocolours are initialised correctly.

This however was undesired when editing properties in the graph editor. Now,
made it so that keyframe adding/removing operators use different notifier flags
to specify that the channels might have changed + need colour syncing, and
adjusted the dopesheet updating logic to fit