move TableBody definition outside of render function

[hipstersmoothie]

I found that if I define a component renderer within a render function, state updates cause the focus to be lost. I found this issue in the underlying library as well.

Tested this in my app and with TableBody outside of the render function the focus is retained.

Simplified Example:

https://codesandbox.io/s/aged-meadow-54jt9?file=/src/index.js

[pupudu]

This is good stuff. Thanks again mate