Make sure all example packages has private: true (#28008)

Update the `check-exampels.sh` script to also ensure all examples has `private: true` (763d9979f7)

Update exampels (1) that did not have `private: true` (bcdc4a3ae0)

examples/with-fauna/package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "name": "with-fauna",
   "version": "1.0.0",
   "license": "MIT",

scripts/check-examples.sh

@@ -3,7 +3,7 @@
 for folder in examples/* ; do
   cp -n packages/create-next-app/templates/default/gitignore $folder/.gitignore;
   if [ -f "$folder/package.json" ]; then
-    cat $folder/package.json | jq '.license = "MIT"' | sponge $folder/package.json
+    cat $folder/package.json | jq '.license = "MIT" | .private = true' | sponge $folder/package.json
   fi
 done;