lsp: handle dynamic registeration of rangeformatting

[sigmaSd]

Summary

yaml lsp uses this for formatting https://github.com/redhat-developer/yaml-language-server/blob/main/src/yamlServerInit.ts#L83

vscode and sublime have this, nvim doesn't

Reproduction Steps

I tried this:

1. hx

I expected this to happen:

Instead, this happened:

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

Platform

linux

Terminal Emulator

wezterm

Helix Version

helix 22.12