Router Refactor: Conditional Route Logic

[larsmaxwell]

1. Conditional Path logic RouterContext uses conditional path property (ln 33)

   const conditionalPath =
       ((current?.element as ReactElement)?.props as { type: string })
         ?.type === 'conditional';

   instead of just checking for the existence of a conditional property:

     const condition = (
       (current?.element as ReactElement)?.props as { condition: string }
     )?.condition;

2. RouterContext.tsx currently uses useField when you could probably hook into the Formik context to get the field value. Determine which method is least expensive, and change it if necessary: const field = condition ? useField(condition) : null;