[wp-trac] [WordPress Trac] #60260: Emoji print script throws deprecation error on embed pages

[WordPress Trac]

#60260: Emoji print script throws deprecation error on embed pages
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 Reporter:  peterwilsoncc  |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  6.4.3
Component:  Script Loader  |    Version:
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 This is a follow-up to 56682 for #58775.

 In WordPress 6.4 `print_emoji_styles()` was deprecated in favour of
 `wp_enqueue_emoji_styles()`. To allow for sites modifying the default
 actions to remove the Emoji scripts, a test if the previous action had
 been removed (see [https://github.com/WordPress/wordpress-
 develop/blob/24531a9afc8ef75822da45b85c147b492674e715/src/wp-
 includes/formatting.php#L5866-L5871 source code]).

 This test doesn't take in to account the embed templates which throw a
 deprecation error as a result on standard WordPress installs. As
 demonstrated
 [https://playground.wordpress.net/?php=8.0&wp=nightly&storage=none#%7B%22$schema%22:%22https://playground.wordpress.net
 /blueprint-
 schema.json%22,%22landingPage%22:%22/?page_id=2&embed=1%22,%22steps%22:%5B%7B%22step%22:%22defineWpConfigConsts%22,%22consts%22:%7B%22WP_DEBUG%22:true%7D%7D%5D%7D
 on this WordPress playground configuration].

 On embed templates (`is_embed() === true`) the action `embed_head` is used
 and will need to be tested instead.

 cc @spacedmonkey

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Ticket URL: <https://core.trac.wordpress.org/ticket/60260>
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