List errors for the whole project (default/diagnostics)

### I confirm that...

- [X] I have searched the [issue tracker](https://github.com/doomemacs/doomemacs/issues), [documentation](https://docs.doomemacs.org), [FAQ](https://docs.doomemacs.org/-/faq), [Discourse](https://discourse.doomemacs.org), and [Google](https://google.com), in case this issue has already been reported/resolved.
- [X] I have read "[How to Debug Issues](https://doomemacs.org/d/how2debug)", and will use it to provide as much information about this issue as possible.
- [X] The issue can be reproduced on the **latest** available commit of Doom.
- [X] 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

Hello,

Why is listing errors for the whole project only implemented for Vertico but not the others?
https://github.com/doomemacs/doomemacs/blob/df5f6696ecf1ffad46a08942d22b1120b6d47ac3/modules/config/default/autoload/default.el#L53-L73

I would expect this would be implemented with 2 keybindings:
- `SPC c x` list errors for buffer
- `SPC c X` list errors for project

No matter what completion system you use.

### Current behavior

Only way to list errors for the whole project is apparently using Vertico.

### Steps to reproduce

- Open any project with LSP (such as Rust) with errors in the project
- `SPC c x` would list errors in the current buffer

No way to list project-wide errors if you're using ivy

### System Information

https://gist.github.com/rakanalh/b1acccc4f76f60744125f8bc42bddfd0