Combining Oshiro bonk, Feather, and a ceiling softlocks Madeline

Observed in D-Sides, [this video](https://cdn.discordapp.com/attachments/429775260108324865/705846860392169542/video0.mov) demonstrates that Madeline gets shoved into the ceiling during an Oshiro bonk out of a feather... from a surprising distance.

This feels like a vanilla-engine bug, which we might be able to fix on our end, as tricky as it might be.

We'll need to run this frame by frame in the tas tools and watch Madeline's active state and her hitboxes...