TinyMCE: add another Edit translatable string for the tooltip of the Edit button on the image toolbar. Props pavelevap, see #30694.

git-svn-id: https://develop.svn.wordpress.org/trunk@30839 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/js/tinymce/plugins/wpeditimage/plugin.js

@@ -22,7 +22,7 @@ tinymce.PluginManager.add( 'wpeditimage', function( editor ) {
 	} );
 
 	editor.addButton( 'wp_img_edit', {
-		tooltip: 'Edit',
+		tooltip: 'Edit ', // trailing space is needed, used for context
 		icon: 'dashicon dashicons-edit',
 		onclick: function() {
 			editImage( editor.selection.getNode() );