fix(MessageReaction): set MessageReaction#me in patch method

[monbrey]

Fixes #5046 by setting MessageReaction#me in MessageReaction#_patch ensuring it gets updated when fetching partials.

Status

• Code changes have been tested against the Discord API, or there are no code changes
• I know how to update typings and have done so, or typings don't need updating

Semantic versioning classification:

• This PR changes the library's interface (methods or parameters added)
  • This PR includes breaking changes (methods removed or renamed, parameters moved or removed)
• This PR only includes non-code changes, like changes to documentation, README, etc.

[ArrowM]

Thanks buddy :)

[ArrowM]

I just updated to 12.5.1. I think your fix for this reversed the issue - but did not fix it. Now reaction.me is the correct value the first time the event is triggered, but returns false on every subsequent trigger.

[monbrey]

Sounds like something I'd cause 😁 will look into it further