Fix sanitization of non-breaking hyphens in sanitize_title_with_dashes

Adds URL-encoded non-breaking hyphen () to the list of characters
converted to regular hyphens in sanitize_title_with_dashes()

Fixes ticket #64089

Author: ppiwo

src/wp-includes/formatting.php

@@ -2294,8 +2294,8 @@ function sanitize_title_with_dashes( $title, $raw_title = '', $context = 'displa
 	$title = strtolower( $title );
 
 	if ( 'save' === $context ) {
-		// Convert &nbsp, &ndash, and &mdash to hyphens.
-		$title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title );
+		// Convert &nbsp, &#8209 (non-breaking hyphen), &ndash, and &mdash to hyphens.
+		$title = str_replace( array( '%c2%a0', '%e2%80%91', '%e2%80%93', '%e2%80%94' ), '-', $title );
 		// Convert &nbsp, &ndash, and &mdash HTML entities to hyphens.
 		$title = str_replace( array( ' ', ' ', '–', '–', '—', '—' ), '-', $title );
 		// Convert forward slash to hyphen.