[make:registration-form][make:reset-password] Refactor constraints to use named arguments

[octoseth]

When generating registration or reset password forms using the MakerBundle, some validation constraints are still passed using arrays. This triggers deprecation warnings in Symfony 7.3+:

Passing an array of options to configure the "%s" constraint is deprecated, use named arguments instead.

This PR updates the generated code to use named arguments for these constraints, removing the deprecations and ensuring compatibility with future Symfony versions.