Confer silent status to nested seeders

[MGatner]

Description
Seeds can call other seeds (https://codeigniter4.github.io/userguide/dbmgmt/seeds.html#nesting-seeders) but since seeds are extensions of the seeder themselves the new seeds will start with their own silent value. This means any tests using nesting seeders will start displaying seed results for every test call, very undesirable.

This PR has the parent seeder pass its silent value to the child before running it.

Checklist:

• Securely signed commits
• Component(s) with PHPdocs
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[lonnieezell]

Good catch. I approve.