[Checkbox] Add checked animation

The Checkbox component is missing the animation for the icon when toggling it. This makes checking the checkbox look bit cluncky, especially when toggling it from the label.

In material design demo you can clearly see the icon animated when you toggle it: https://material-components.github.io/material-components-web-catalog/#/component/checkbox

Compare it to the current implementation in material-ui. See especially how it looks when toggling it by clicking the label.
https://material-ui.com/components/checkboxes/

Even in v0 has some kind of animation, which in my opinion makes it look better than the current version https://v0.material-ui.com/#/components/checkbox

• This is a v1.x issue.
• I have searched the issues of this repository and believe that this is not a duplicate.

Edit: Updated outdated link