Checking the delta after the application of rate is not correct. The
delta is in screen-space *before* the rate from rate-changing mods were
applied; the point of the application of the rate is to compensate for
the fact that the spinner is still judged in "track time" - but the goal
is to keep the spinner's difficulty *independent* of rate, which means
that with DT active the user's spin is "twice as effective" to
compensate for the fact that the spinner is twice as short in real time.
In another formulation, with DT active, the user gets to record replay
frames "half as often" as in normal gameplay.
Closes https://github.com/ppy/osu/issues/25239.
`LegacyEditorBeatmapPatcher.processHitObjectLocalData()` was already
supposed to be handling changes to hitobjects that will show up neither
when comparing the hitobjects themselves or the timing point with
"legacy" info stripped - so, in other words, changes to slider velocity
and samples.
However, a change to slider velocity requires default application to
take effect, so just resetting the value would visually fix the timeline
marker but not change the actual object. Calling
`EditorBeatmap.Update()` fixes this by way of triggering default
re-application.
This could probably be smarter (by only invoking the update when
strictly necessary, etc.) - but I'm not sure it's worth the hassle. This
is intended to be a quick fix, rather than a complete solution - the
complete solution would indeed likely entail a wholesale restructuring
of the editor's change handling.
`SelectionHandler` is receiving input from anywhere out of necessity:
19f892687a/osu.Game/Screens/Edit/Compose/Components/SelectionHandler.cs (L119-L125)
Also important is that `BlueprintContainer` will selectively not block
right clicks to make sure they fall through to the
`ContextMenuContainer`:
19f892687a/osu.Game/Screens/Edit/Compose/Components/BlueprintContainer.cs (L122-L126)
But because the whole editor is sharing a `ContextMenuContainer` and
it's at a higher level than both components, we observe here the
playfield's `SelectionHandler` intercepting the right click before it
can reach the `ContextMenuContainer`.
The fix here is similar to what we're already doing in
`TimelineBlueprintContaienr`.
