Add test that JSON schema generation works + actions build from no input (#23049)

Release Notes:

- N/A

crates/languages/Cargo.toml

@@ -56,7 +56,6 @@ project.workspace = true
 regex.workspace = true
 rope.workspace = true
 rust-embed.workspace = true
-schemars.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 settings.workspace = true

crates/languages/src/json.rs

@@ -10,7 +10,6 @@ use language::{LanguageRegistry, LanguageToolchainStore, LspAdapter, LspAdapterD
 use lsp::{LanguageServerBinary, LanguageServerName};
 use node_runtime::NodeRuntime;
 use project::{lsp_store::language_server_settings, ContextProviderWithTasks};
-use schemars::gen::SchemaSettings;
 use serde_json::{json, Value};
 use settings::{KeymapFile, SettingsJsonSchemaParams, SettingsStore};
 use smol::{
@@ -76,6 +75,7 @@ impl JsonLspAdapter {
     }
 
     fn get_workspace_config(language_names: Vec<String>, cx: &mut AppContext) -> Value {
+        let keymap_schema = KeymapFile::generate_json_schema_for_registered_actions(cx);
         let font_names = &cx.text_system().all_font_names();
         let settings_schema = cx.global::<SettingsStore>().json_schema(
             &SettingsJsonSchemaParams {
@@ -115,7 +115,7 @@ impl JsonLspAdapter {
                     },
                     {
                         "fileMatch": [schema_file_match(paths::keymap_file())],
-                        "schema": Self::generate_keymap_schema(cx),
+                        "schema": keymap_schema,
                     },
                     {
                         "fileMatch": [
@@ -129,16 +129,6 @@ impl JsonLspAdapter {
             }
         })
     }
-
-    fn generate_keymap_schema(cx: &mut AppContext) -> Value {
-        let mut generator = SchemaSettings::draft07()
-            .with(|settings| settings.option_add_null_type = false)
-            .into_generator();
-
-        let action_schemas = cx.action_schemas(&mut generator);
-        let deprecations = cx.action_deprecations();
-        KeymapFile::generate_json_schema(generator, action_schemas, deprecations)
-    }
 }
 
 #[async_trait(?Send)]