Zod parsing of large election definitions is very slow and can affect a wide range of operations

[arsalansufi]

While we removed Zod parsing from auth machine state polling in #5256, we retrieve the election definition as part of nearly every backend operation.

So when the election definition is large, nearly every operation is slowed down.

Ideally, we'd only Zod parse on configure. And then trust that the election definition is formatted correctly.

Note that, even with #5256, if the imported election definition is a CDF election definition, we'll still constantly Zod parse. This ultimately isn't a big deal as we don't expect consumers to be using CDF election definitions any time soon. We're just meeting a cert requirement for now.