External Libraries: Accessibility: Clean up clipboard.js Copy buttons from focus management workaround.

`clipboard.js` used to suffer from a bug that triggered a focus loss when activating the Copy buttons. The bug was fixed a while ago with the `clipboard.js` 2.0.11 release so that the workaround implemented in WordPress is no longer necessary.

Props dhrumilk, paulkevan, afercia.
Fixes #60139.


git-svn-id: https://develop.svn.wordpress.org/trunk@57231 602fd350-edb4-49c9-b593-d223f7449a82

Author: afercia

src/js/_enqueues/admin/media.js

@@ -223,8 +223,6 @@
 
 			// Clear the selection and move focus back to the trigger.
 			event.clearSelection();
-			// Handle ClipboardJS focus bug, see https://github.com/zenorocha/clipboard.js/issues/680.
-			triggerElement.trigger( 'focus' );
 
 			// Show success visual feedback.
 			clearTimeout( copyAttachmentURLSuccessTimeout );

src/js/_enqueues/admin/post.js

@@ -1303,8 +1303,6 @@ jQuery( function($) {
 
 		// Clear the selection and move focus back to the trigger.
 		event.clearSelection();
-		// Handle ClipboardJS focus bug, see https://github.com/zenorocha/clipboard.js/issues/680
-		triggerElement.trigger( 'focus' );
 
 		// Show success visual feedback.
 		clearTimeout( copyAttachmentURLSuccessTimeout );

src/js/_enqueues/admin/site-health.js

@@ -26,8 +26,6 @@ jQuery( function( $ ) {
 
 		// Clear the selection and move focus back to the trigger.
 		e.clearSelection();
-		// Handle ClipboardJS focus bug, see https://github.com/zenorocha/clipboard.js/issues/680
-		triggerElement.trigger( 'focus' );
 
 		// Show success visual feedback.
 		clearTimeout( successTimeout );

src/js/_enqueues/vendor/plupload/handlers.js

@@ -380,8 +380,6 @@ function copyAttachmentUploadURLClipboard() {
 
 		// Clear the selection and move focus back to the trigger.
 		event.clearSelection();
-		// Handle ClipboardJS focus bug, see https://github.com/zenorocha/clipboard.js/issues/680
-		triggerElement.trigger( 'focus' );
 		// Show success visual feedback.
 		clearTimeout( successTimeout );
 		successElement.removeClass( 'hidden' );

src/js/media/views/attachment/details.js

@@ -47,8 +47,6 @@ Details = Attachment.extend(/** @lends wp.media.view.Attachment.Details.prototyp
 
 			// Clear the selection and move focus back to the trigger.
 			event.clearSelection();
-			// Handle ClipboardJS focus bug, see https://github.com/zenorocha/clipboard.js/issues/680
-			triggerElement.trigger( 'focus' );
 
 			// Show success visual feedback.
 			clearTimeout( successTimeout );