Bug Description

refreshPostEditURL is used to update the URL in the address bar after publishing/updating a story.

However, it currently only runs after updating a story, not after initially publishing it.

Expected Behaviour

URL in address bar should be updated the first time around, when publishing the story.

Steps to Reproduce

1. Create new story.
2. Click Publish
3. Notice that URL does not change, it stays wp-admin/post-new.php?post_type=web-story
4. Click `Update
5. Notice that URL changes to wp-admin/post.php?post=123456&action=edit

In other words:

1. Create new story.
2. Click Publish
3. Reload page
4. Lose changes

Screenshots

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Acceptance Criteria

QA Instructions