Administration: Use wp_admin_notice() in /wp-admin/.

Add usages of `wp_admin_notice()` and `wp_get_admin_notice()` on `.notice-[type]` in the root level of `/wp-admin/`. Ongoing task to implement new function across core.

Props costdev, joedolson.
See #57791.

git-svn-id: https://develop.svn.wordpress.org/trunk@56570 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/edit-form-advanced.php

@@ -440,12 +440,29 @@ if ( isset( $post_new_file ) && current_user_can( $post_type_object->cap->create
 
 <hr class="wp-header-end">
 
-<?php if ( $notice ) : ?>
-<div id="notice" class="notice notice-warning"><p id="has-newer-autosave"><?php echo $notice; ?></p></div>
-<?php endif; ?>
-<?php if ( $message ) : ?>
-<div id="message" class="updated notice notice-success is-dismissible"><p><?php echo $message; ?></p></div>
-<?php endif; ?>
+<?php
+if ( $notice ) :
+	wp_admin_notice(
+		'<p id="has-newer-autosave">' . $notice . '</p>',
+		array(
+			'type'           => 'warning',
+			'id'             => 'notice',
+			'paragraph_wrap' => false,
+		)
+	);
+endif;
+if ( $message ) :
+	wp_admin_notice(
+		$message,
+		array(
+			'type'               => 'success',
+			'dismissible'        => true,
+			'id'                 => 'message',
+			'additional_classes' => array( 'updated' ),
+		)
+	);
+endif;
+?>
 <div id="lost-connection-notice" class="error hidden">
 	<p><span class="spinner"></span> <?php _e( '<strong>Connection lost.</strong> Saving has been disabled until you are reconnected.' ); ?>
 	<span class="hide-if-no-sessionstorage"><?php _e( 'This post is being backed up in your browser, just in case.' ); ?></span>