Admin/Comments: remove bespoke truncation from search string HTML.

This change removes a call to `wp_html_excerpt()` used on the HTML output of the search string, supplied by the current user in the previous page request via the named `s` input in the search-box UI.

If the search string is extremely long, it wraps around the available empty space in a way that is not visually displeasing, confirming that truncation is not a requirement here.

This also addresses a small accessibility concern as the non-truncated string was not alternatively presented, and helps normalize the output of `$_REQUEST['s']` for more broad improvements in the future.

Props hareesh-pillai, jakubtyrcha, johnjamesjacoby, lukecavanagh, sabernhardt.

Fixes #17636.
Built from https://develop.svn.wordpress.org/trunk@51975


git-svn-id: http://core.svn.wordpress.org/trunk@51564 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/edit-comments.php

@@ -251,7 +251,7 @@ if ( isset( $_REQUEST['s'] ) && strlen( $_REQUEST['s'] ) ) {
 	printf(
 		/* translators: %s: Search query. */
 		__( 'Search results for: %s' ),
-		'<strong>' . wp_html_excerpt( esc_html( wp_unslash( $_REQUEST['s'] ) ), 50, '&hellip;' ) . '</strong>'
+		'<strong>' . esc_html( wp_unslash( $_REQUEST['s'] ) ) . '</strong>'
 	);
 	echo '</span>';
 }

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51974';
+$wp_version = '5.9-alpha-51975';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.