Fix enemy sprite disappearing on Roar or Dragon Tail

[flx-sta]

Fixes #481

What are the changes the user will see?

When an enemy uses Roar or Dragon Tail the sprite won't disappear anymore

Why am I making these changes?

To fix #481

What are the changes from a developer perspective?

A battle animation was considered isEnemy() only if it wasn't the player pokemon and if Array.isArray(moveAnims.get(this.move)) is true. According to @pom-eranian this might be a relict of the past as animation used to have definitions for player usage & enemy usage.

After removing the Array.isArray() check Roar and Dragon Tail worked as expected.
The reason why it fixes it can be seen in this comment in issue #481

Screenshots/Videos

Screen_Recording_2024-08-30_at_2.07.42_PM.mov

How to test the changes?

const overrides = {
  OPP_MOVESET_OVERRIDE: [ Moves.ROAR, Moves.ROAR, Moves.ROAR, Moves.ROAR ],
} satisfies Partial<InstanceType<typeof DefaultOverrides>>;

or

const overrides = {
  OPP_MOVESET_OVERRIDE: [ Moves.DRAGON_TAIL, Moves.DRAGON_TAIL, Moves.DRAGON_TAIL, Moves.DRAGON_TAIL ],
} satisfies Partial<InstanceType<typeof DefaultOverrides>>;

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?