Editor: Hide 'Skip to Editor' if editor not supported.

Wrap the classic editor 'Skip to Editor' link in a conditional to prevent it from rendering on post types that do not have editor support.

Props wildworks, parthvataliya, narenin, sainathpoojary, ankitkumarshah, parthvataliya, im3dabasia1.
Fixes #62623.

git-svn-id: https://develop.svn.wordpress.org/trunk@59511 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

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

@@ -546,7 +546,13 @@
 	?>
 	<label class="screen-reader-text" id="title-prompt-text" for="title"><?php echo $title_placeholder; ?></label>
 	<input type="text" name="post_title" size="30" value="<?php echo esc_attr( $post->post_title ); ?>" id="title" spellcheck="true" autocomplete="off" />
-	<a href="#content" class="button-secondary screen-reader-text skiplink" onclick="if (tinymce) { tinymce.execCommand( 'mceFocus', false, 'content' ); }"><?php esc_html_e( 'Skip to Editor' ); ?></a>
+	<?php
+	if ( post_type_supports( $post_type, 'editor' ) ) {
+		?>
+		<a href="#content" class="button-secondary screen-reader-text skiplink" onclick="if (tinymce) { tinymce.execCommand( 'mceFocus', false, 'content' ); }"><?php esc_html_e( 'Skip to Editor' ); ?></a>
+		<?php
+	}
+	?>
 </div>
 	<?php
 	/**