[Fix] Remove unwanted props from DOM + remove redundant never types from some conditional props

[riitasointi]

Description

PR removes unwanted props from leaking to DOM in the <Tooltip> and <VisuallyHidden> components.

Also remove redundant never typings from a few conditional prop types in <Button>, <MultiSelect> and <SingleSelect>

Motivation and Context

These were reported as bugs by a user

How Has This Been Tested?

Styleguidist + CRA project + Typescript tests in this repo

Release notes

Tooltip

• Prevent onToggleButtonClick and onCloseButtonClick props from leaking to DOM

VisuallyHidden

• Fix forwardedRef behavior

Button

• Remove redundant never typing from LoadingProps

SingleSelect

• Remove redundant never typing from LoadingProps
• Remove redundant never typing from AllowItemAdditionProps

MultiSelect

• Remove redundant never typing from LoadingProps
• Remove redundant never typing from AllowItemAdditionProps