[UI/UX] Text is grey again in delay confirm option menu

[Wlowscha]

What are the changes the user will see?

Confirm options with a delay show up as grey text for the duration of the delay, again.

Why am I making these changes?

This was the behavior before #5083. The changes to the option select ui handler in that PR included a shift to BBCodeText objects. An unwanted consequence of this is that, since BBCodeText objects do not support a setAlpha() method, the method previously used to turn the text grey temporarily does not work anymore.

See bug report here and here.

What are the changes from a developer perspective?

The BBCodeText object is wrapped in a new container, and the setAlpha() method of the container is called instead.

Screenshots/Videos

Pokerogue.Mozilla.Firefox.2025-02-22.22-38-00.mp4

How to test the changes?

Start a new run, try to overwrite an existing save slot.

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 provided screenshots/videos of the changes (if applicable)?