ssh remote: Handle disconnect on project and show overlay (#19014)

Demo:



https://github.com/user-attachments/assets/e5edf8f3-8c15-482e-a792-6eb619f83de4


Release Notes:

- N/A

---------

Co-authored-by: Bennet <bennet@zed.dev>

crates/remote/src/remote.rs

@@ -5,4 +5,5 @@ pub mod ssh_session;
 
 pub use ssh_session::{
     ConnectionState, SshClientDelegate, SshConnectionOptions, SshPlatform, SshRemoteClient,
+    SshRemoteEvent,
 };