remote ssh: Make "get permalink to line" work (#19366)

This makes the `editor: copy permalink to line` and `editor: copy
permalink to line` actions work in SSH remote projects.

Previously it would only work in local projects.

Demo:


https://github.com/user-attachments/assets/a8012152-b631-4b34-9ff2-e4d033c97dee




Release Notes:

- N/A

crates/proto/src/proto.rs

@@ -370,6 +370,8 @@ messages!(
     (Toast, Background),
     (HideToast, Background),
     (OpenServerSettings, Foreground),
+    (GetPermalinkToLine, Foreground),
+    (GetPermalinkToLineResponse, Foreground),
 );
 
 request_messages!(
@@ -494,7 +496,8 @@ request_messages!(
     (CheckFileExists, CheckFileExistsResponse),
     (ShutdownRemoteServer, Ack),
     (RemoveWorktree, Ack),
-    (OpenServerSettings, OpenBufferResponse)
+    (OpenServerSettings, OpenBufferResponse),
+    (GetPermalinkToLine, GetPermalinkToLineResponse),
 );
 
 entity_messages!(
@@ -571,7 +574,7 @@ entity_messages!(
     Toast,
     HideToast,
     OpenServerSettings,
-
+    GetPermalinkToLine,
 );
 
 entity_messages!(