with antd v4.18.3 or newer help labels on form items are always displayed even if they are empty

[momesana]

Prerequisites

• I have read the documentation;
• In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.
• Ideally, I'm providing a sample JSFiddle or a shared playground link demonstrating the issue.

Description

Antd version 4.18.3 introduced a small change (https://github.com/ant-design/ant-design/pull/33644/files#diff-2bf6ed805cec0d6717765729f24ab52e77149471de0b5ad3a568c9ad1c6c297bR228) that only hides the help label between the form item input and the description field if the value of the help property is undefined. Before the change any falsy value would do. Unfortunately this looks pretty weird in conjunction with the description field as the description is shifted away from the input in a way that they seem disjoint. It even looks as if the description belonged to the form item below it. Just to give you an impression of how that looks like, below is a screenshots of the same form with the antd versions 4.18.2 and 4.18.3 respectively:

The fix should be fairly simple. The expression in https://github.com/rjsf-team/react-jsonschema-form/blob/master/packages/antd/src/templates/FieldTemplate/index.js#L68 needs to be changed from

help={(!!rawHelp && help) || (!!rawErrors && renderFieldErrors())}

to

help={(!!rawHelp && help) || (!!rawErrors && renderFieldErrors()) || undefined}

or better still to

help={rawHelp ? help : rawErrors ? randerFieldErrors() : undefined}

which is a bit easier on the eyes.

Here is a very simple example that reproduces the problem:
https://stackblitz.com/edit/react-5zxqns-zozml8?file=index.js

Here is the exact same example but with a version of antd (4.18.2) that didn't yet cause that behaviour:
https://stackblitz.com/edit/react-5zxqns-gy4vis?file=index.js

Steps to Reproduce

Set up rjsf with a version of antd that is higher than 4.18.3 and use form items with descriptions.

Expected behavior

The help label is only shown if there is actual help content. The description field should be right below the form input element without a wide gap between them.

Actual behavior

An empty help label is shown if there is no help or error information. The description field is shifted down with a notable gap between the form input element and the description field.

Version

"@rjsf/antd": "^4.0.1",
"@rjsf/core": "^4.0.1",
"antd": "4.19.1",

[momesana]

I've made a PR for this here: #2780

[heath-freenome]

This has been fixed in the v5 beta