Elixir LSP not formatting

[ankhers]

I confirm that...

• I have searched the issue tracker, documentation, FAQ, Discourse, and Google, in case this issue has already been reported/resolved.

• I have read "How to Debug Issues", and will use it to provide as much information about this issue as possible.

• The issue can be reproduced on the latest available commit of Doom.

• The issue can be reproduced on a stable release of Emacs, such as 27, 28, or 29. (Unstable versions end in .50, .60, or .9x)

Expected behavior

When I save an Elixir file, I expect elixir ls to format the file

Current behavior

When I save the Elixir file, apheleia-mode ends up being used to format the buffer instead.

If I remove elixir-mode from apheleia-mode-alist and try to save a file, no formatting happens.

When I manually run +format/buffer, it does use the configured LSP in order to format the buffer. +format-with-lsp is also set to t.

Steps to reproduce

1. With (elixir +lsp) and lsp enabled in general
2. Open an Elixir file (.ex)
3. make some modifications
4. save the file

System Information

https://paste.sr.ht/~ankhers/53edc4aa233207d9ca989bc76617b32f739f18f0