Standardize middleware defineValidationRules signatures in module templates

[armanist]

Summary

Standardize defineValidationRules(Request $request): void across DemoWeb and DemoApi middleware templates for a consistent method contract.

Scope

• Update BaseMiddleware.php.tpl in DemoWeb and DemoApi to use : void
• Update all middleware template overrides to match : void

Why

Current templates use mixed signatures (with and without : void), which creates inconsistency in generated modules and avoidable confusion during maintenance.

Acceptance criteria

• All defineValidationRules(Request $request) methods under:
  • src/Module/Templates/DemoWeb/src/Middlewares
  • src/Module/Templates/DemoApi/src/Middlewares
    use : void consistently, including base middleware templates.