refactor: clean up and denest AttemptCapturePhase

[Bertie690]

What are the changes the user will see?

N/A

Why am I making these changes?

AttemptCapturePhase was an absolute nightmare, with 15+ nesting levels' worth of tween chain-wrapped UI-handler callback code.

Also, it was virtually untestable due to the extremely convoluted way in which the capture formula was computed. What fun!

What are the changes from a developer perspective?

Denested and Promisifyed the file, moving lots of code into private methods rather than nested callbacks.
Among other things, the shake check count is now pre-determined ahead of time instead of computed on the fly in the middle of the tween chain, greatly simplifying logic and easing the ability for subclasses to override the formula logic.

Also removed PokeballType.LUXURY_BALL for the time being until we actually get more ball types. (Once we do, we can actually add them in dex order instead of some arbitrary ordering.)

Screenshots/Videos

Before

old.mp4

After

new.mp4

NB: I was not able to actively record footage of a failed catch attempt, but verified off-camera that it indeed works.

How to test the changes?

pnpm test capture-phase.test.ts payback.test.ts.
Former has had a 7-month TODO test properly filled in, while the latter demonstrates the new capture formula being actually testable instead of

Checklist

• The PR content is correctly formatted:
  • I'm using beta as my base branch
  • The current branch is not named beta, main or the name of another long-lived feature branch
  • I have provided a clear explanation of the changes within the PR description
  • The PR title matches the Conventional Commits format (as described in CONTRIBUTING.md)
• The PR is self-contained and cannot be split into smaller PRs
• There is no overlap with another open PR
• The PR has been confirmed to work correctly:
  • I have tested the changes manually
  • The full automated test suite still passes (use pnpm test:silent to test locally)
  • I have created new automated tests (pnpm test:create) or updated existing tests related to the PR's changes if necessary
• I have provided screenshots/videos of the changes (if applicable)