[NumberField] use a (higher) default for `maximumFractionDigits` option

[ogroppo]

Is your feature request related to a problem? Please describe.
NumberField is using, according to documentation, Intl.NumberFormat() which by mdn docs is "the default for plain number formatting is the larger of minimumFractionDigits and 3" i.e. 3
Example in Datagrid:
0.001 => 0.001
0.0001 => 0 // very confusing for user, thinking the value is 0

Describe the solution you'd like
Provide by default the maximum value for maximumFractionDigits (100) to Intl.NumberFormat so that user doesn't see 0 when the value is 0.0001

Describe alternatives you've considered
transforming manually, tedious

[fzaninotto]

React-admin uses the JS API default and I don't think it's a good idea to deviate from it. Besides, using a different default in this case would be a breaking change.

So I'm -1 for changing this behavior.

[ogroppo]

Hi @fzaninotto - yes I see your point, however the formatter as-is is not satisfactory for the normal usage (a decimal with 4 digits is not really an edge case). Why would you say it's a breaking change? To me, the user using the component would perceive it as a patch, without applying any change.
I agree with PR #10719

[fzaninotto]

This would be a breaking change because people probably rely on the current behavior. Besides, we're using the same defaults as JS, so the current implementation requires less documentation and creates less WTF than if we had a different default.

If this isn't ideal in your use case, I'm sorry but you can always create your own variant:

const MyNumberField = (props: NumberFieldProps) => <NumberField options={{ minimumFractionDigits: 100 }} {...props} />

Additionally, we're expanding the ability to set default props at the theme level (cf #10655). Feel free to open a PR to do the same for NumberField.

I'll close the associated PR for the same reason.