chore: update

Author: Timeless0911

packages/core/src/config.ts

@@ -333,7 +333,7 @@ const composeDtsConfig = async (
   libConfig: LibConfig,
   dtsExtension: string,
 ): Promise<RsbuildConfig> => {
-  const { dts, bundle, output, autoExtension } = libConfig;
+  const { dts, bundle, output } = libConfig;
 
   if (dts === false || dts === undefined) return {};
 
@@ -344,7 +344,7 @@ const composeDtsConfig = async (
         bundle: dts?.bundle ?? bundle,
         distPath: dts?.distPath ?? output?.distPath?.root ?? './dist',
         abortOnError: dts?.abortOnError ?? true,
-        dtsExtension: autoExtension === false ? '.d.ts' : dtsExtension,
+        dtsExtension,
       }),
     ],
   };