General: Get rid of title attributes used by get_calendar().

This changeset replaces `title` attributes with `aria-label` for weekdays in `get_calendar()` table cells.

Props sabernhardt, audrasjb, mukesh27, shailu25.
Fixes #62860.
See #24766.




git-svn-id: https://develop.svn.wordpress.org/trunk@59711 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/general-template.php

@@ -2346,7 +2346,7 @@ function get_calendar( $initial = true, $display = true ) {
 	foreach ( $myweek as $wd ) {
 		$day_name         = $initial ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
 		$wd               = esc_attr( $wd );
-		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
+		$calendar_output .= "\n\t\t<th scope=\"col\" aria-label=\"$wd\">$day_name</th>";
 	}
 
 	$calendar_output .= '