[Doc] Update <NumberInput> docs to match new behavior

[itspladd]

Is your feature request related to a problem? Please describe.
The <NumberInput> documentation still references the component's old behavior, in which it only updates on blur. The component was changed in PR #8033; more specifically, the component now functions well in a filter form, since it updates the filtered value on change instead of on blur.

Describe the solution you'd like
Update the <NumberInput> docs to reflect the new behavior and remove or update the "Usage In Filter Form" section.

Describe alternatives you've considered
N/A, I think

Additional context
I'm not sure if there are still caveats or special considerations for using <NumberInput> in a filter form; otherwise, I'd just submit a PR to update the docs directly. However, I can anecdotally say that I've used it to filter lists by Postgres ID with no customization or obvious problems.

[fzaninotto]

Good catch, thanks for pointing that out!