Disable forwarding the Escape event (#10697)

src/modules/colorPicker/ColorPickerUI/Helpers/AppStateHandler.cs

@@ -54,7 +54,7 @@ namespace ColorPicker.Helpers
             }
         }
 
-        public void EndUserSession()
+        public bool EndUserSession()
         {
             lock (_colorPickerVisibilityLock)
             {
@@ -70,7 +70,11 @@ namespace ColorPicker.Helpers
                     }
 
                     SessionEventHelper.End();
+
+                    return true;
                 }
+
+                return false;
             }
         }
 

src/modules/colorPicker/ColorPickerUI/Keyboard/KeyboardMonitor.cs

@@ -72,7 +72,7 @@ namespace ColorPicker.Keyboard
             // ESC pressed
             if (virtualCode == KeyInterop.VirtualKeyFromKey(Key.Escape))
             {
-                _appStateHandler.EndUserSession();
+                e.Handled = _appStateHandler.EndUserSession();
                 return;
             }