[Bug] Fix off-by-one errors in some random number calls

[DayKev]

What are the changes the user will see?

Confusion will last 2-5 turns now instead of 2-4, trapping moves like Fire Spin will last 4-5 turns now instead of only 4, etc.
Basically, every move/effect that had a min-max turn range will actually last between the minimum and maximum amount of turns now instead of between min and max - 1.
Also fixes a bug where a move with 99 accuracy couldn't miss, as if it had 100 accuracy.

Why am I making these changes?

There was some usage of the random number functions that was incorrect.

What are the changes from a developer perspective?

Some instances of randSeedInt(range, min) are replaced with randSeedIntRange(min, max) when they were intended to be random between min and max inclusive and min was a number greater than zero.
Some tsdocs are added to the various randSeedInt() functions as well.

How to test the changes?

Liberal use of the browser devtools console and/or console.log() I guess?

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 add placeholders for them in locales?
• 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?