Modifying `settings` on a DataBackend does not update `client`

[SergioSim]

Feature Request

Is your feature request related to a problem or an unsupported use case? Please describe.

The public BaseDataBackend.settings instance attribute can be modified after backend instantiation.
However, once the backend instantiates its client property, any changes to settings do not update client.

Describe the solution you'd like

If changing a backend settings attribute after instantiation is a common use case, I think we should track its state from the client property and update client in case of a change.

Describe alternatives you've considered

Alternatively, we could make settings a "read-only" instance attribute to clarify that modifying it might not have the desired impact).

Or we could improve our documentation, explaining data backend behavior when settings is modified.

Discovery, Documentation, Adoption, Migration Strategy

No major impact.

Do you want to work on it through a Pull Request?

Yes, sure, once a consensus is reached on the desired behavior.

Note

Thanks to @Leobouloc for pointing out this issue in #524 (comment)_