perf: enable rspack's nativeWatcher

packages/core/src/core/plugins/entry.ts

@@ -79,6 +79,9 @@ export const pluginEntryWatch: (params: {
           '**/*.snap',
         );
 
+        config.experiments ??= {};
+        config.experiments.nativeWatcher = true;
+
         const configFilePath = context.projects.find(
           (project) => project.environmentName === environment.name,
         )?.configFilePath;

packages/core/tests/core/__snapshots__/rsbuild.test.ts.snap

@@ -1702,6 +1702,9 @@ exports[`prepareRsbuild > should generate rspack config correctly in watch mode
   "context": "<ROOT>/packages/core",
   "devtool": "nosources-source-map",
   "entry": [Function],
+  "experiments": {
+    "nativeWatcher": true,
+  },
   "externals": [
     [Function],
     {