test: begin the switch to RTL

[mvadari]

High Level Overview of Change

Context of Change

Waiting for the Streams refactor, because the tests are failing there for some reason

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (non-breaking change that only restructures code)
• Tests (You added tests for code that already exists, or your new feature included in this PR)
• Documentation Updates
• Release

TypeScript/Hooks Update

• Updated files to React Hooks
• Updated files to TypeScript

Before / After

Test Plan

[mvadari]

It's failing the LedgersPage tests, which I haven't even touched in this PR. Going to wait for those to be refactored.

These tests are failing because for some reason, in Streams.addLedger, the setState happens after the return of the function. I assume this would be fixed through hooks.

[mvadari]

This might be relevant for fixing the TS issues: vitest-dev/vitest#664

[mvadari]

Closing in favor of the cleaner version: #945