Remove paged query arg if equal to 1.

Resolve existing issue with manual entry of page 1 not working.

src/wp-admin/edit-tags.php

@@ -216,6 +216,9 @@
 	if ( $pagenum > 1 ) {
 		$location = add_query_arg( 'paged', $pagenum, $location ); // $pagenum takes care of $total_pages.
 	}
+	if ( 1 === $pagenum ) {
+		$location = remove_query_arg( 'paged', $location );
+	}
 
 	/**
 	 * Filters the taxonomy redirect destination URL.