Feature: Automatically delete empty text boxes

[athyfr]

Is your feature request related to a problem? Please describe.
If I ctrl+x to empty a text box and move its content to another, I often end up with empty text boxes littering my document, only visible when using the select tool.

Describe the solution you'd like
When an empty text box (or a text box only containing whitespace) is deselected, it should be automatically deleted.

Describe existing solutions that have this feature
Excalidraw

Additional context
N/A