lsp: Add container_name to lsp::Symbol (#46822)

Some language servers include local symbols (e.g., local variables,
parameters) in workspace symbol results. Without the `containerName`
information, these symbols lack context information, making it difficult
to distinguish them from top-level definitions and hindering efficient
symbol lookup.

This change exposes the `container_name` field from LSP
[`SymbolInformation`](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#symbolInformation)
to the extension API, allowing language server extensions to access
`symbol.container_name` in `label_for_symbol` and provide meaningful
context when rendering symbol labels.

Note: The `container_name `field is added to all extension API versions
because they seem to share the same underlying Rust types via wasmtime
bindgen. The field is optional, so existing extensions would remain
compatible as far as I understand.

Closes #ISSUE

Release Notes:

- Added `container_name` field to `lsp::Symbol`, accessible via the
extension API's `label_for_symbol` function

---------

Co-authored-by: MrSubidubi <finn@zed.dev>

crates/languages/src/python.rs

@@ -8,7 +8,7 @@ use futures::{AsyncBufReadExt, StreamExt as _};
 use gpui::{App, AsyncApp, SharedString, Task};
 use http_client::github::{AssetKind, GitHubLspBinaryVersion, latest_github_release};
 use language::language_settings::language_settings;
-use language::{ContextLocation, DynLspInstaller, LanguageToolchainStore, LspInstaller};
+use language::{ContextLocation, DynLspInstaller, LanguageToolchainStore, LspInstaller, Symbol};
 use language::{ContextProvider, LspAdapter, LspAdapterDelegate};
 use language::{LanguageName, ManifestName, ManifestProvider, ManifestQuery};
 use language::{Toolchain, ToolchainList, ToolchainLister, ToolchainMetadata};
@@ -550,11 +550,11 @@ impl LspAdapter for PyrightLspAdapter {
 
     async fn label_for_symbol(
         &self,
-        name: &str,
-        kind: lsp::SymbolKind,
+        symbol: &language::Symbol,
         language: &Arc<language::Language>,
     ) -> Option<language::CodeLabel> {
-        let (text, filter_range, display_range) = match kind {
+        let name = &symbol.name;
+        let (text, filter_range, display_range) = match symbol.kind {
             lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => {
                 let text = format!("def {}():\n", name);
                 let filter_range = 4..4 + name.len();
@@ -1708,11 +1708,11 @@ impl LspAdapter for PyLspAdapter {
 
     async fn label_for_symbol(
         &self,
-        name: &str,
-        kind: lsp::SymbolKind,
+        symbol: &language::Symbol,
         language: &Arc<language::Language>,
     ) -> Option<language::CodeLabel> {
-        let (text, filter_range, display_range) = match kind {
+        let name = &symbol.name;
+        let (text, filter_range, display_range) = match symbol.kind {
             lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => {
                 let text = format!("def {}():\n", name);
                 let filter_range = 4..4 + name.len();
@@ -2000,11 +2000,11 @@ impl LspAdapter for BasedPyrightLspAdapter {
 
     async fn label_for_symbol(
         &self,
-        name: &str,
-        kind: lsp::SymbolKind,
+        symbol: &Symbol,
         language: &Arc<language::Language>,
     ) -> Option<language::CodeLabel> {
-        let (text, filter_range, display_range) = match kind {
+        let name = &symbol.name;
+        let (text, filter_range, display_range) = match symbol.kind {
             lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => {
                 let text = format!("def {}():\n", name);
                 let filter_range = 4..4 + name.len();