[Beta][Misc] Improved cursor memory for target selection in Doubles

[frutescens]

What are the changes the user will see?

The cursor will reset its position to the leftmost enemy when:

1. It is the first turn (of the wave) for the Pokemon involved.
2. A new wave begins
3. The Pokemon used a move that targeted an ally or itself
   It will remember its position if it targets an enemy though.

Why am I making these changes?

Changes requested by Beta testers.

What are the changes from a developer perspective?

Changes to show() and processInput()

Screenshots/Videos

freecompress-Screen.Recording.2024-11-11.at.1.58.10.PM.mp4

How to test the changes?

1. Fight in a double battle and check how the user facing conditions are working.

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)
• Are the changes visual?
  • Have I provided screenshots/videos of the changes?