[Lens] Do not reset formatting when switching between custom ranges and auto histogram

[flash1293]

When switching from explicit ranges to auto histogram, the local formatting is reset (in this example it's jumping from bytes to default):

While settings for granularity and custom ranges should indeed be set to the default when switching, the format is a separate piece of UI and can stay the same when doing so

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[denismaxim0v]

I would like to take a look at that if that's still available and not conflicting with any ongoing work

[flash1293]

@denismaxim0v Hey, sure, sounds great, thanks for contributing 💚 I'll assign the issue to you, let me know if you can't continue to work on it for any reason.