Further improve TextBox component

[magicznyleszek]

Checklist

1. If you've added code that should be tested, add tests
2. If you've changed APIs, update (or create!) the documentation
3. Ensure the tests pass
4. Make sure that your code lints and that you've followed our coding style
5. Write a title and, if necessary, a description of your work suitable for publishing in our release notes
6. Mention any related issues in this repository (as #ISSUE) and in other repositories (as kobotoolbox/other#ISSUE)
7. Open an issue in the docs if there are UI/UX changes

Description

Add sizing option to TextBox component.

Notes

Things changed here:

• Added sizes (similar to Button component) and updated story file
• Added renderFocused option (needed on feature/analysis branch)
• Changed what number type allows to by typed inside input (we need to be more strict given how unevenly browsers do it)
  • Because of that I had to switch from onChange to onInput callback (hack to fix a bug)
• Updated the package we use to render <textarea> element to a better one

Related issues

Part of #3914