Avoid accidental gpui transitive dependency in collab

* Make Fs depend on Text, not vise versa

Co-authored-by: Joseph <joseph@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>

crates/language/src/buffer.rs

@@ -15,7 +15,6 @@ use crate::{
 };
 use anyhow::{anyhow, Result};
 pub use clock::ReplicaId;
-use fs::LineEnding;
 use futures::FutureExt as _;
 use gpui::{fonts::HighlightStyle, AppContext, Entity, ModelContext, Task};
 use lsp::LanguageServerId;