Accessibility: Make sure the Site Health pages have a unique document title.

The document `<title>` gives a name to a web document. In the context of the WordPress admin, a unique, meaningful, title is important for various reasons:
- it allows browser's history to store meaningful entries 
- when multiple browser's tabs are open, it allows users to better identify the tab content 
- it's the first thing screen readers announce when navigating to a web page, thus helping users to identify the nature of the page content

Props chetan200891, mukesh27.
Fixes #46699.


git-svn-id: https://develop.svn.wordpress.org/trunk@45070 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/site-health-info.php

@@ -9,6 +9,8 @@
 /** WordPress Administration Bootstrap */
 require_once( dirname( __FILE__ ) . '/admin.php' );
 
+$title = __( 'Site Health Info' );
+
 if ( ! current_user_can( 'install_plugins' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to access the debug data.' ), '', 403 );
 }

src/wp-admin/site-health.php

@@ -14,6 +14,8 @@ if ( isset( $_GET['tab'] ) && 'debug' === $_GET['tab'] ) {
 /** WordPress Administration Bootstrap */
 require_once( dirname( __FILE__ ) . '/admin.php' );
 
+$title = __( 'Site Health Status' );
+
 if ( ! current_user_can( 'install_plugins' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to access site health information.' ), '', 403 );
 }