MDL-45040 editor-atto: selection reverts erroneously

Fixed an issue where selections reverted on toolbar button press when the last selection was made by dragging outside of Atto.

lib/editor/atto/yui/build/moodle-editor_atto-plugin/moodle-editor_atto-plugin-debug.js

@@ -748,6 +748,9 @@ EditorPluginButtons.prototype = {
             this.get('host').focus();
         }
 
+        // Save the selection.
+        this.get('host').saveSelection();
+
         // Ensure that we focus on this button next time.
         if (creatorButton) {
             this.get('host')._setTabFocus(creatorButton);

lib/editor/atto/yui/build/moodle-editor_atto-plugin/moodle-editor_atto-plugin.js

@@ -746,6 +746,9 @@ EditorPluginButtons.prototype = {
             this.get('host').focus();
         }
 
+        // Save the selection.
+        this.get('host').saveSelection();
+
         // Ensure that we focus on this button next time.
         if (creatorButton) {
             this.get('host')._setTabFocus(creatorButton);

lib/editor/atto/yui/src/editor/js/editor-plugin-buttons.js

@@ -600,6 +600,9 @@ EditorPluginButtons.prototype = {
             this.get('host').focus();
         }
 
+        // Save the selection.
+        this.get('host').saveSelection();
+
         // Ensure that we focus on this button next time.
         if (creatorButton) {
             this.get('host')._setTabFocus(creatorButton);