Fill capabilities on project (re)join (#35892)

Follow-up of https://github.com/zed-industries/zed/pull/35682

Release Notes:

- N/A

Co-authored-by: Smit Barmase <smit@zed.dev>

crates/project/src/lsp_store.rs

@@ -7768,12 +7768,19 @@ impl LspStore {
     pub(crate) fn set_language_server_statuses_from_proto(
         &mut self,
         language_servers: Vec<proto::LanguageServer>,
+        server_capabilities: Vec<String>,
     ) {
         self.language_server_statuses = language_servers
             .into_iter()
-            .map(|server| {
+            .zip(server_capabilities)
+            .map(|(server, server_capabilities)| {
+                let server_id = LanguageServerId(server.id as usize);
+                if let Ok(server_capabilities) = serde_json::from_str(&server_capabilities) {
+                    self.lsp_server_capabilities
+                        .insert(server_id, server_capabilities);
+                }
                 (
-                    LanguageServerId(server.id as usize),
+                    server_id,
                     LanguageServerStatus {
                         name: LanguageServerName::from_proto(server.name),
                         pending_work: Default::default(),

crates/project/src/project.rs

@@ -1487,7 +1487,10 @@ impl Project {
                 fs.clone(),
                 cx,
             );
-            lsp_store.set_language_server_statuses_from_proto(response.payload.language_servers);
+            lsp_store.set_language_server_statuses_from_proto(
+                response.payload.language_servers,
+                response.payload.language_server_capabilities,
+            );
             lsp_store
         })?;
 
@@ -2318,7 +2321,10 @@ impl Project {
         self.set_worktrees_from_proto(message.worktrees, cx)?;
         self.set_collaborators_from_proto(message.collaborators, cx)?;
         self.lsp_store.update(cx, |lsp_store, _| {
-            lsp_store.set_language_server_statuses_from_proto(message.language_servers)
+            lsp_store.set_language_server_statuses_from_proto(
+                message.language_servers,
+                message.language_server_capabilities,
+            )
         });
         self.enqueue_buffer_ordered_message(BufferOrderedMessage::Resync)
             .unwrap();