Texture drop logic

[raphamorim]

Hey @ayosec thanks for the awesome work you have done in Alacritty and for making it available for any person that likes alacritty.

I have an question regarding your implementation, I ported most of your changes to Rio terminal https://github.com/raphamorim/rio but I can see that you added a logic for texture drop then graphic removal, I would like to confirm about if there's anything on term code that applies drop for it or is basically if it's removed from the row.

Asking because I found this issue in Rio implementation raphamorim/rio#709 but I cannot reproduce with your terminal fork.

Thanks in advance 🙏