Icons being clicked cause elem.split to fail

[HarleyWilkins]

Describe the bug

When you click a button with an icon in it you get an error telling you the elem.split function failed.

To Reproduce

Steps to reproduce the behavior:

1. Add a button with an icon or an icon that calls the open logic in some way.
2. When the button/icon is clicked You receive the error.

Expected behavior

While the date picker still will show up, the console error should not happen as the item clicked may not have a class and wont be parsed if it is an icon.

Desktop (please complete the following information):

• OS: Windows 11
• Browser: Chrome/Brave
• Version: 4.3.3

[HarleyWilkins]

pull request to fix it #126