What are the changes the user will see?

Background
There was a reported bug where if a player holds the amulet coin and completes a job for the part-timer mystery encounter, they will not receive the bonus. In other words, the rewards given from the mystery encounter are unaffected by the amulet coins benefit.

Why am I making these changes?

This PR addresses this issue by ensuring that after the money multiplier is applied, we'll also give a bonus for the amulet coin.

Fixes #5285

What are the changes from a developer perspective?

The only changes in this PR resides in part-time-encounter.ts where after the money multiplier has been determined, we then give the player a bonus for the amulet coin.

Screenshots/Videos

Note: I did not write unit tests for this change since this seems to be a minor bug fix and not game breaking

Set up

• I've created to save files, one with the amulet coin, and the other without
• I've also used the exact party in both save files (gen 1 starting trio)

How to test the changes?

The testing description outlines how you can test this along with the issues.
To summarize,

• Create two load files with the overrides

	STARTING_WAVE_OVERRIDE: 11,
	MYSTERY_ENCOUNTER_RATE_OVERRIDE: 255,
	MYSTERY_ENCOUNTER_OVERRIDE: MysteryEncounterType.PART_TIMER,
	STARTING_MODIFIER_OVERRIDE: [{name: "AMULET_COIN"}] // comment this out for one save

• Select a pokemon for the mystery encounter for both saves and you should see that there is an increase with the amulet coin
• Check the logs and you should see the amulet coin event logged

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 created new automated tests (npm run create-test) or updated existing tests related to the PR's changes?
• Have I provided screenshots/videos of the changes (if applicable)?
  • Have I made sure that any UI change works for both UI themes (default and legacy)?

Are there any localization additions or changes? If so:

• Has a locales PR been created on the locales repo?
  • If so, please leave a link to it here:
• Has the translation team been contacted for proofreading/translation?