Simplify faker offsets and limits

[evantahler]

Fixes a bug introduced in #27684 in which products could have a null updated_at. This PR also greatly simplifies the generation limits for each stream.

Closes #27802

[github-actions]

Before Merging a Connector Pull Request

Wow! What a great pull request you have here! 🎉

To merge this PR, ensure the following has been done/considered for each connector added or updated:

• PR name follows PR naming conventions
• Breaking changes are considered. If a Breaking Change is being introduced, ensure an Airbyte engineer has created a Breaking Change Plan and you've followed all steps in the Breaking Changes Checklist
• Connector version has been incremented in the Dockerfile and metadata.yaml according to our Semantic Versioning for Connectors guidelines
• Secrets in the connector's spec are annotated with airbyte_secret
• All documentation files are up to date. (README.md, bootstrap.md, docs.md, etc...)
• Changelog updated in docs/integrations/<source or destination>/<name>.md with an entry for the new version. See changelog example
• The connector tests are passing in CI
• You've updated the connector's metadata.yaml file (new!)
• If set, you've ensured the icon is present in the platform-internal repo. (Docs)

If the checklist is complete, but the CI check is failing,

1. Check for hidden checklists in your PR description

2. Toggle the github label checklist-action-run on/off to re-run the checklist CI.

[octavia-squidington-iii]

source-faker test report (commit fcf3f163a3) - ✅

⏲️ Total pipeline duration: 146 seconds

Step	Result
Validate airbyte-integrations/connectors/source-faker/metadata.yaml	✅
Connector version semver check	✅
Connector version increment check	✅
QA checks	✅
Code format checks	✅
Connector package install	✅
Build source-faker docker image for platform linux/x86_64	✅
Unit tests	✅
Acceptance tests	✅

🔗 View the logs here

Please note that tests are only run on PR ready for review. Please set your PR to draft mode to not flood the CI engine and upstream service on following commits.
You can run the same pipeline locally on this branch with the airbyte-ci tool with the following command

airbyte-ci connectors --name=source-faker test

[octavia-squidington-iii]

source-faker test report (commit fcf3f163a3) - ✅

⏲️ Total pipeline duration: 131 seconds

Step	Result
Validate airbyte-integrations/connectors/source-faker/metadata.yaml	✅
Connector version semver check	✅
Connector version increment check	✅
QA checks	✅
Code format checks	✅
Connector package install	✅
Build source-faker docker image for platform linux/x86_64	✅
Unit tests	✅
Acceptance tests	✅

🔗 View the logs here

Please note that tests are only run on PR ready for review. Please set your PR to draft mode to not flood the CI engine and upstream service on following commits.
You can run the same pipeline locally on this branch with the airbyte-ci tool with the following command

airbyte-ci connectors --name=source-faker test

[evantahler]

This is the explicit fix - updated_at is always set to a value now

[bnchrch]

Approved!

I will be honest, there is a lot in this connector thats hard to follow.

But its a connector for testing not for users 😛

[evantahler]

It's the multi threading... and it was my first-ever Python project 😅

It's probably due for a refactor!