[Bug] Fix Happy Hour's effect disappearing immediately after usage

[PigeonBar]

What are the changes the user will see?

Happy Hour's effect no longer disappears immediately after usage, and it will instead remain until the next arena reset.

Why am I making these changes?

A small bug fix for a bug introduced by #170.

What are the changes from a developer perspective?

• Happy Hour's arena tag now has a starting turn count of 0, which the code interprets as an arena tag that remains indefinitely (until the next arena reset).
• Similarly, AddArenaTagAttr's default turn count is changed from 1 to 0.
• Also added a basic test for Happy Hour.

Screenshots/Videos

Before the changes: Happy Hour's effect disappears immediately, and the player earns $420

20250105.Before.Fix.Happy.Hour.mp4

After the changes: Happy Hour's effect no longer disappears immediately, and the player earns $840

20250105.After.Fix.Happy.Hour.mp4

How to test the changes?

npm run test happy_hour

Checklist

• I'm using beta as my base branch
• There is no overlap with another PR?
• The PR is self-contained and cannot be split into smaller PRs?
• Have I provided a clear explanation of the changes?
• Have I tested the changes manually?
• Are all unit tests still passing? (npm run test)
  • Have I created new automated tests (npm run create-test) or updated existing tests related to the PR's changes?
• Have I provided screenshots/videos of the changes (if applicable)?

[innerthunder]

Can you change the default turnCount in AddArenaTagAttr to 0? I think that on its own should fix the issue.