Fix with '_featured' and '_filled' meta on duplicated posts

[fjorgemota]

Fixes #2827

Changes Proposed in this Pull Request

• Centralize add_post_meta to add _filled and _featured in a single place after the post is called.

Testing Instructions

1. Apply this patch
2. Install ACF
3. Install a plugin to duplicate posts, like Yoast Duplicate Post
4. Create a custom field/form for job listings
5. Add a new job listing, fill it normally
6. Go to the job listing page on admin, click to Clone it
7. Edit the new post, edit the custom field, save, check if it doesn't break everything

Release Notes

• Fix with '_featured' and '_filled' meta on duplicated posts

New or Updated Hooks and Templates

Deprecated Code

Screenshot / Video

---

Plugin build for fc3b10c
📦 Download plugin zip
▶️ Open in playground

[fjorgemota]

This approach won't work because the way the plugins to duplicate posts work. Closing..