editor: Fix "Toggle comments" not respecting multiple line_comments in language config (#10126)

This does not try to heuristically pick a comment style based on
surroundings anyhow. It does improve our story around uncommenting
though.

Fixes #10113.

Release Notes:

- Fixed "Toggle comment" action not working in presence of non-default
line comments such as doc comments in Rust
([#10113](https://github.com/zed-industries/zed/issues/10113)).
b118b76272Piotr Osiewicz committed on 4/3/2024, 3:34:59 PM· committed by GitHubparent57a1b9b
2 files changedLine totals unavailable