Interface for answering phase2 validation

There is a specific use case for validation when we need to answer a question in an era agnostic fashion:

"Did phase2 validation outcome match the `isValid` flag?"

In other words was there `ValidationTagMismatch` predicate failure and was it the only validation failure.

There is a similar interface [already exists in consensus](https://github.com/IntersectMBO/ouroboros-consensus/blob/0323fce39dd610ac4787e4d9015f86400b806e42/ouroboros-consensus-cardano/src/shelley/Ouroboros/Consensus/Shelley/Eras.hs#L319)

However, it is quite dangerous to do specific pattern matching on the predicate failure, since there are unfortunately sometimes multiple paths on how a failure can be constructed. In order to make it safer we need to implement #4170 first.

This is how it could look like in ledger:

```haskell
class EraTwoPhaseValidation era where
isValidationTagMismatch :: EraRuleFailure "LEDGER" era -> Maybe TagMismatchDescription
```
Two comments on differences with consensus interface:

* Instead of `Bool` we would return `Maybe TagMismatchDescription`
* Instead of `PredicateFailure` we can use `EraRuleFailure`, which is better for type inference