Upgrade/Install: Update screen reader text counts in adminbar.

Update the hidden screen-reader-text update count in the adminbar when updates are run on the plugin or theme screens.

Props pento, paulschreiber, adamsilverstein, afercia, SergeyBiryukov, sabernhardt.
Fixes #29022.
Built from https://develop.svn.wordpress.org/trunk@52139


git-svn-id: http://core.svn.wordpress.org/trunk@51731 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/updates.js

@@ -33,6 +33,7 @@
 	var $document = $( document ),
 		__ = wp.i18n.__,
 		_x = wp.i18n._x,
+		_n = wp.i18n._n,
 		sprintf = wp.i18n.sprintf;
 
 	wp = wp || {};
@@ -352,8 +353,14 @@
 			$appearanceNavMenuUpdateCount = $( 'a[href="themes.php"] .update-plugins' ),
 			itemCount;
 
-		$adminBarUpdates.find( '.ab-item' ).removeAttr( 'title' );
 		$adminBarUpdates.find( '.ab-label' ).text( settings.totals.counts.total );
+		$adminBarUpdates.find( '.updates-available-text' ).text(
+			sprintf(
+				/* translators: %s: Total number of updates available. */
+				_n( '%s update available', '%s updates available', settings.totals.counts.total ),
+				settings.totals.counts.total
+			)
+		);
 
 		// Remove the update count from the toolbar if it's zero.
 		if ( 0 === settings.totals.counts.total ) {

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52138';
+$wp_version = '5.9-alpha-52139';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.