Force visibility to password when editing a post in quick edit.

[Hug0-Drelon]

Visibility is never set for password when using quick edit, thus edit_post() cannot unset sticky status in https://github.com/WordPress/wordpress-develop/blob/6.9.1/src/wp-admin/includes/post.php#L308-L322.

Looking at it, I thought that wp_ajax_inline_save() would handle that like it does for private status. But it might be dead code around https://github.com/WordPress/wordpress-develop/blob/6.9.1/src/wp-admin/includes/ajax-actions.php#L2117-L2122.
Removing it does effect the feature (remove sticky status when a post is private).

Trac ticket: https://core.trac.wordpress.org/ticket/64810

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