[KOA-4848] Update padding in input and textarea components

[anambl]

	Before	After
+ large textarea example

Summary:

• Add large property to textarea component
• Update left and right padding in input and textarea components to 0.5rem for default size and 1rem when large prop is true
• When input/textarea is valid/invalid/clearable, set right padding to 2rem and 2.5rem when large (left padding in RTL) to account for the valid/invalid/clearable icons.

Remember to include the following changes:

• UNRELEASED.md (See How to write a good changelog entry)
• README.md
• Tests
• Docs (either update backpack-docs now, or create a follow up ticket)

[github-actions]

Visual regression tests passed 😎. Bear in mind that they only run in Chromium on static components – they aren't perfect.

[github-actions]

Visit https://backpack.github.io/storybook-prs/2309 to see this build running in a browser.

[github-actions]

	Warnings
⚠️	Package source files (e.g. packages/package-name/src/Component.js) were updated, but snapshots weren't. Have you checked that the tests still pass?

Browser support

If this is a visual change, make sure you've tested it in multiple browsers,
particularly IE11.

Generated by 🚫 dangerJS against 11d5d6f

[github-actions]

Visual regression tests passed 😎. Bear in mind that they only run in Chromium on static components – they aren't perfect.

[github-actions]

Visit https://backpack.github.io/storybook-prs/2309 to see this build running in a browser.