[Ability] Partially Implement Infiltrator

[innerthunder]

What are the changes the user will see?

This partially implements Infiltrator. Infiltrator now doesn't bypass the effects of Mist, but otherwise functions as expected.

Why am I making these changes?

Less (N) moves (even though technically this should've been marked (P) after the Substitute implementation)

What are the changes from a developer perspective?

• data/ability: New InfiltratorAbAttr flags Light Screen, Reflect, Aurora Veil, Safeguard, and Substitute as "bypassed" when they would otherwise be applied.
• field/pokemon: New isSafeguarded function to check if a Pokemon is under the effects of Safeguard when defending against another Pokemon's move.
• data/arena-tag and data/move: Relevant tags and functions have been updated to apply the attacker's InfiltratorAbAttr and cancel or bypass effects.
• test/abilities/infiltrator.test: New integration tests for Infiltrator against all relevant field effects and Substitute (Mist test currently skipped)

Screenshots/Videos

How to test the changes?

npm run test infiltrator

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 considered writing automated tests for the issue?
• If I have text, did I make it translatable and add a key in the English locale file(s)?
• 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?

[innerthunder]

Converting to draft... gonna wait on #4659 to update