Some property of EditCondition and FRuntimeFloatCurve changes cannot be detected by GetOnFinishedChangingProperties

We've received reports that you're not getting notifications when you change some properties on Sequencer keys. Specifically, I am not able to get notified in NotifyFinishedChangingProperties of SStructureDetailsView when I change properties of EditCondition and FRuntimeFloatCurve. It works fine for other properties.

Both properties can be notified with FPropertyNode::NotifyPreChange, but adding an implementation to SStructureDetailsView allows the user to treat them like any other property.

1. Open repro proj
2. Add breakpoint to SDetailsViewBase::NotifyFinishedChangingProperties
3. Open NewLevelSequence
4. Edit Key of "Sample"

expect : Hit breakpoint
result : breakpoint does not work