bug: Editing leaves a lot of scratch buffers open

[wvffle]

Describe the bug

Whenever I edit my files with avante through selecting in visual mode and then editing inline, each prompt leaves a lot of open scratch buffers.
They contain avante stuff like ⠄ <C-s>: submit

To reproduce

1. open up any project
2. select a couple of lines in visual mode
3. edit them with avante (any prompt)
4. check :ls! to see unclosed scratch buffers
5. check :buffer <id> to see that scratch buffers contain avante stuff like ⠄ <C-s>: submit

Expected behavior

Avante should clean up after itself

Installation method

Using nixvim:

   programs.nixvim.plugins.avante = {
      enable = true;
      settings = {
        provider = "copilot";
        mappings = {
          ask = "<leader>Aa";
          edit = "<leader>Ae";
          refresh = "<leader>Ar";
        };
      };
    };

Environment

NVIM v0.10.3
Build type: Release
LuaJIT 2.1.1713773202
Run "nvim -V1 -v" for more info

Linux nixos 6.12.9 #1-NixOS SMP PREEMPT_DYNAMIC Thu Jan 9 12:33:55 UTC 2025 x86_64 GNU/Linux

Repro