Run React Scan and optimize primary user flows to minimize re-renders

[franknoirot]

Re-renders have been an ongoing source of annoyance for us. A new tool that visually surfaces re-rendering UI elements called react-scan was recently released, which makes it easier than ever to debug re-rendering issues. As we approach V1 release (possibly during the testing phase we've planned), run react-scan on the app and submit refactoring PRs to minimize re-renders.

Note

This should be done in tandem with making re-rendering tests that run in CI