As touched on in
https://github.com/ppy/osu/issues/30237#issuecomment-2408557766, these
types of maneouvers are no longer required after
https://github.com/ppy/osu/pull/30021 - although as it turns out on
closer inspection, these things being there still *did not actually
break anything*, because the `slider.Path` mutation at the end of
`modifySlider()` causes `updateNestedPositions()` to be called
eventually anyway. So this is at mostly a code quality upgrade.
Closes https://github.com/ppy/osu/issues/30237.
This is the root failure in the issue, and one that *only* presents when
another conversion mod that repositions the objects is also active. That
makes the `PathProgress` of the nesteds to be zero, therefore making
them occupy the position of the slider head after any mutation to the
path.