Run seeded tests for all locales

[ST-DDT]

Clear and concise description of the problem

Currently the seeded tests only run for the en locale.

Suggested solution

Run the seeded tests for all locales.

Pro:

• Generate visible examples for all locales

Con:

• Might cause a review overload due to the amount of generated test snapshots

Alternative

Do nothing extra

Additional context

The discussion originally came up in #1735 (comment)

[ST-DDT]

For now, I'm kind of against adding this as this reduces the probability that someone actually reviews the test snapshots.

[ST-DDT]

Team decision

We will change the seeded tests to run all tests for all faker instances and verify, but only the main faker instance will write test snapshots.
This will render the all_functional.spec.ts obsolete.

[xDivisionByZerox]

Is this required for v8? I could be implemented in v8-x as well, no?

[ST-DDT]

I think its just nice to have.