Fix on_scheduled_event_update event

[NeloBlivion]

Summary

Fixes on_scheduled_event_update's before argument always being None by converting the ID to int before getting the event.

Closes #1579

• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed).
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.

[Lulalaby]

someone fix the code spell issue please, the failing ci's are annoying.
Idc if it's out of scope