refactor: enforced with_limits demo

[rezzmah]

Summary

Refactors ConfigureEvm to enforce that EVM limits are always applied, eliminating the risk of SDK users forgetting to call .with_limits() in their custom implementations.

Problem: Previously, implementors of ConfigureEvm had to manually call .with_limits() in both evm_env() and next_evm_env(). This made it easy to forget to apply limits.

Solution: Introduces a template method pattern:

• Adds evm_env_without_limits() and next_evm_env_without_limits() as required methods that return the base environment
• evm_env() and next_evm_env() now have default implementations that automatically apply limits
• Adds evm_limit_params_at_timestamp() as a required method to provide limits
• Introduces NextBlockTimestamp trait to enable accessing timestamp from NextBlockEnvCtx

NOTE: This impl is missing equivalent for ConfigureEngineEvm