Convert ErrorBoundary component from class-based to functional

[jocelynn1uphealth]

Background:

We want to improve the bundle size and performance of this library and write modern React code.

Expected Behavior:

• No user-facing changes should result from this change
• The ErrorBoundary class has been removed and replaced with a functional component of the same name
• The ErrorBoundary component is in its own file
• stories + documentation have been updated
• nothing breaks

[kvaithin]

Hi @jocelynn1uphealth .

This class uses componentDidCatch and there is no equivalent hook available yet.

Based on this closed discussion, doesn't look like an equivalent hook is coming.
https://www.npmjs.com/package/react-error-boundary

Alternatively could consider an additional dependency like the following to support this.
https://www.npmjs.com/package/react-error-boundary

Let me know your thoughts.

[patrick-1upHealth]

Addressed this and #398 in #404