Formatters are not reset when adding a new provider

[singleseeker]

Summary

After using addProvider method, get a weird result

Versions

	Version
PHP	7.4.13
fakerphp/faker	1.15.0

use Faker\Provider\en_US\Person;
use Faker\Provider\zh_CN\Person as Zh_CNPerson;

// =============================

$this->faker->addProvider(new Person($this->faker));

dump($this->faker->lastName() . ' ' . $this->faker->firstName());

$this->faker->addProvider(new Zh_CNPerson($this->faker));

dd($this->faker->lastName() . ' ' . $this->faker->firstName());

sometimes, you may hope to use different names, with addProvider method, get a weird result.

"Kerluke Lexie"
"Turner 杨"

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 1 week if no further activity occurs. Thank you for your contributions.

[bram-pkg]

What happens when you run this multiple times?