chore(rsbuild-plugin): restore manual externals

Author: ScriptedAlchemy

packages/rsbuild-plugin/rslib.config.ts

@@ -6,7 +6,6 @@ export default defineConfig({
       format: 'esm',
       syntax: 'es2021',
       bundle: true,
-      autoExternal: true,
       dts: {
         distPath: './dist',
       },
@@ -15,7 +14,6 @@ export default defineConfig({
       format: 'cjs',
       syntax: 'es2021',
       bundle: true,
-      autoExternal: true,
       dts: false,
     },
   ],
@@ -32,6 +30,7 @@ export default defineConfig({
     distPath: {
       root: './dist',
     },
+    externals: [/@module-federation\//, 'pnpapi'],
     copy: [
       {
         from: './LICENSE',