Handle buffer diff base updates and file renames properly for SSH projects (#14989)

Release Notes:

- N/A

---------

Co-authored-by: Conrad <conrad@zed.dev>

crates/project/src/debounced_delay.rs

@@ -1,26 +1,25 @@
-use std::time::Duration;
-
 use futures::{channel::oneshot, FutureExt};
 use gpui::{ModelContext, Task};
+use std::{marker::PhantomData, time::Duration};
 
-use crate::Project;
-
-pub struct DebouncedDelay {
+pub struct DebouncedDelay<E: 'static> {
     task: Option<Task<()>>,
     cancel_channel: Option<oneshot::Sender<()>>,
+    _phantom_data: PhantomData<E>,
 }
 
-impl DebouncedDelay {
-    pub fn new() -> DebouncedDelay {
-        DebouncedDelay {
+impl<E: 'static> DebouncedDelay<E> {
+    pub fn new() -> Self {
+        Self {
             task: None,
             cancel_channel: None,
+            _phantom_data: PhantomData,
         }
     }
 
-    pub fn fire_new<F>(&mut self, delay: Duration, cx: &mut ModelContext<Project>, func: F)
+    pub fn fire_new<F>(&mut self, delay: Duration, cx: &mut ModelContext<E>, func: F)
     where
-        F: 'static + Send + FnOnce(&mut Project, &mut ModelContext<Project>) -> Task<()>,
+        F: 'static + Send + FnOnce(&mut E, &mut ModelContext<E>) -> Task<()>,
     {
         if let Some(channel) = self.cancel_channel.take() {
             _ = channel.send(());