Prop type cleanup

[Bonkles]

Description

When enabling/disabling the themes in the theme selector, pinning various things, in development mode console there are many errors pertaining to properties missing from props validation.

In Map.jsx, you can see that there is an example block with a single property type defined:

Map.propTypes = {
  mode: PropTypes.string.isRequired,
};

But open nearly any other .jsx file in the repo and they're missing these type declarations. We should clean all these up!

What browser are you seeing the problem on? What version are you running?

all

The OS you're using

any

Steps to reproduce

Pop open any .jsx file in the site using VSCode, and you will see many errors.

GERS ID of the entity in question (if applicable)

n/a

The browser URL at the time you encountered the bug

n/a