helpId is used in aria-describedby, but no element with the id

[kjellivar]

Hi! Just noticed that aria-describedby is referencing a helpId, but there's no element that has it.

Should the helpText element here have the id?

react/packages/textarea/src/component.tsx

Line 83 in fe5b060

{helpText && <div className="input__sub-text">{helpText}</div>}