Enumerate feature invisible in png export

[JavidPack]

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• [x] I agree to follow the Code of Conduct that this project adheres to.
• [x] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Describe the bug Using the enumerate feature to number shapes, I would expect the numbers in the exported png. They are missing.

To Reproduce Steps to reproduce the behavior:

1. New diagram
2. Add a rectangle
3. Expand properties and check "Enumerate"
4. Take note of the "1" in a yellow box that appears on the rectangle, this is the Enumerate feature.
5. Export png with default options. Resulting image file does not have the 1 or the yellow box.

Expected behavior I expect the png to have the enumerate feature. Testing .pdf, it properly is represented

Screenshots In the editor:

Resulting image:

**draw.io version 20.0.3

Desktop (please complete the following information):

• Windows 10
• Chrome