Uninitialized constant Dry::Validation::Messages::Resolver

## Describe the bug

Sometimes `uninitialized constant Dry::Validation::Messages::Resolver` error occurs in production sites. It originates from [this line](https://github.com/dry-rb/dry-validation/blob/0c650b665718d1c534b62a755133ac3c1612db4f/lib/dry/validation/contract.rb#L81)

Restarting the server solves the issue.

## To Reproduce

Not easy to reproduce

## My environment

- Affects my production application: **YES**
- Ruby version: 3.3.5
- OS: Ubuntu 24.04.3
- Dry Validation Version: 1.11.1
- Zeitwerk Version: 2.7.2

Start at lib/dry/validation/contract.rb line 81 and review how the Resolver constant is loaded with Zeitwerk 2.7.2 in the listed Ruby and Ubuntu environment. Investigate the production-only initialization failure and determine what evidence or regression coverage would show that the constant remains available without restarting the server.

Written by the indexing model from the issue text.