[cli] Fix example list api to exclude node_modules (#9626)

<img width="219" alt="image"
src="https://user-images.githubusercontent.com/229881/223744886-e4bf430d-078c-49c4-81c3-0c30dce08f2e.png">

api/_lib/script/build.ts

@@ -33,7 +33,12 @@ async function main() {
   });
 
   const existingExamples = exampleDirs
-    .filter(dir => dir.isDirectory())
+    .filter(
+      dir =>
+        dir.isDirectory() &&
+        dir.name !== 'node_modules' &&
+        dir.name !== '__tests__'
+    )
     .map(dir => ({
       name: dir.name,
       visible: true,