Make errorBag parameter optional

[joelstein]

Before today, I could write the following code:

router.replace({
  url: `/some-url`,
  preserveScroll: true,
  preserveState: true,
})

However, with the latest release, now I receive a Typescript error:

Argument of type '{ url: string; preserveScroll: true; preserveState: true; }' is not assignable to parameter of type 'ClientSideVisitOptions'. │
│ Property 'errorBag' is missing in type '{ url: string; preserveScroll: true; preserveState: true; }' but required in type 'ClientSideVisitOptions'.

This pull request makes the errorBag property optional.

[pascalbaljet]

Thanks!