Fix autocomplete completions being cut in half (#8327)
Release Notes:
- Fixed LSP completions being cut in half
([#8126](https://github.com/zed-industries/zed/issues/8126)).
Previously, autocomplete suggestions were covered by autocomplete
documentation, which only appeared after a short delay.
Now, when an autocomplete suggestion is too long to fit, the name is
truncated with ellipses like how VSCode does it:
Additionally `completion_documentation_secondary_query_debounce`'s
default was changed from 300ms to 0ms, which makes the editor feel
significantly faster (in my opinion).
Before:
https://github.com/zed-industries/zed/assets/50590465/6443670b-fe25-4428-9a39-54405d9a7cec
After:
https://github.com/zed-industries/zed/assets/50590465/72572487-3eb4-4a96-a2f9-608e563a1f05
---------
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Conrad <conrad@zed.dev>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
