Specify a schema to use when dealing with JSONC files (#44250)

Follow-up of https://github.com/zed-industries/zed/pull/43854
Closes https://github.com/zed-industries/zed/issues/40970

Seems that json language server does not distinguish between JSONC and
JSON files in runtime, but there is a static schema, which accepts globs
in its `fileMatch` fields.

Use all glob overrides and file suffixes for JSONC inside those match
fields, and provide a grammar for such matches, which accepts trailing
commas.

Release Notes:

- Improved JSONC trailing comma handling

crates/languages/src/json.rs

@@ -7,8 +7,8 @@ use futures::StreamExt;
 use gpui::{App, AsyncApp, Task};
 use http_client::github::{GitHubLspBinaryVersion, latest_github_release};
 use language::{
-    ContextProvider, LanguageName, LocalFile as _, LspAdapter, LspAdapterDelegate, LspInstaller,
-    Toolchain,
+    ContextProvider, LanguageName, LanguageRegistry, LocalFile as _, LspAdapter,
+    LspAdapterDelegate, LspInstaller, Toolchain,
 };
 use lsp::{LanguageServerBinary, LanguageServerName, Uri};
 use node_runtime::{NodeRuntime, VersionStrategy};
@@ -129,14 +129,15 @@ fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {
 }
 
 pub struct JsonLspAdapter {
+    languages: Arc<LanguageRegistry>,
     node: NodeRuntime,
 }
 
 impl JsonLspAdapter {
     const PACKAGE_NAME: &str = "vscode-langservers-extracted";
 
-    pub fn new(node: NodeRuntime) -> Self {
-        Self { node }
+    pub fn new(languages: Arc<LanguageRegistry>, node: NodeRuntime) -> Self {
+        Self { languages, node }
     }
 }
 
@@ -255,7 +256,7 @@ impl LspAdapter for JsonLspAdapter {
         cx: &mut AsyncApp,
     ) -> Result<Value> {
         let mut config = cx.update(|cx| {
-            let schemas = json_schema_store::all_schema_file_associations(cx);
+            let schemas = json_schema_store::all_schema_file_associations(&self.languages, cx);
 
             // This can be viewed via `dev: open language server logs` -> `json-language-server` ->
             // `Server Info`

crates/languages/src/lib.rs

@@ -89,7 +89,7 @@ pub fn init(languages: Arc<LanguageRegistry>, fs: Arc<dyn Fs>, node: NodeRuntime
     let go_context_provider = Arc::new(go::GoContextProvider);
     let go_lsp_adapter = Arc::new(go::GoLspAdapter);
     let json_context_provider = Arc::new(JsonTaskProvider);
-    let json_lsp_adapter = Arc::new(json::JsonLspAdapter::new(node.clone()));
+    let json_lsp_adapter = Arc::new(json::JsonLspAdapter::new(languages.clone(), node.clone()));
     let node_version_lsp_adapter = Arc::new(json::NodeVersionAdapter);
     let py_lsp_adapter = Arc::new(python::PyLspAdapter::new());
     let ty_lsp_adapter = Arc::new(python::TyLspAdapter::new(fs.clone()));