Resolve proto hints with empty resolve data (#19274)

Fixed ssh remoting not showing a lot of hints


Release Notes:

- N/A

crates/project/src/lsp_command.rs

@@ -2439,14 +2439,12 @@ impl InlayHints {
             ResolveState::Resolved => (0, None),
             ResolveState::CanResolve(server_id, resolve_data) => (
                 1,
-                resolve_data
+                Some(proto::resolve_state::LspResolveState {
-                    .map(|json_data| {
+                    server_id: server_id.0 as u64,
+                    value: resolve_data.map(|json_data| {
                         serde_json::to_string(&json_data)
                             .expect("failed to serialize resolve json data")
-                    })
+                    }),
-                    .map(|value| proto::resolve_state::LspResolveState {
-                        server_id: server_id.0 as u64,
-                        value,
                 }),
             ),
             ResolveState::Resolving => (2, None),
@@ -2515,9 +2513,11 @@ impl InlayHints {
         let resolve_state_data = resolve_state
             .lsp_resolve_state.as_ref()
             .map(|lsp_resolve_state| {
-                serde_json::from_str::<Option<lsp::LSPAny>>(&lsp_resolve_state.value)
+                let value = lsp_resolve_state.value.as_deref().map(|value| {
+                    serde_json::from_str::<Option<lsp::LSPAny>>(value)
                         .with_context(|| format!("incorrect proto inlay hint message: non-json resolve state {lsp_resolve_state:?}"))
-                    .map(|state| (LanguageServerId(lsp_resolve_state.server_id as usize), state))
+                }).transpose()?.flatten();
+                anyhow::Ok((LanguageServerId(lsp_resolve_state.server_id as usize), value))
             })
             .transpose()?;
         let resolve_state = match resolve_state.state {

crates/proto/proto/zed.proto

@@ -1207,7 +1207,7 @@ message ResolveState {
     }
 
     message LspResolveState {
-        string value = 1;
+        optional string value = 1;
         uint64 server_id = 2;
     }
 }