fix(app-cmds): before and after invoke hooks not working for function inside cogs

[okay1204]

Summary

Fixes an issue where the before_invoke and after_invoke decorators were not able to be used on functions inside Cogs because of the self parameter not being addressed. This fix simply checks how many arguments the passed in hook has and decides if the parent cog should be passed in for the self argument or not.

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
  • I have run task pyright and fixed the relevant issues.
• 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, ...)

[okay1204]

@teaishealthy Reverted the previous change because it broke the fix. It needs the else statement or else the hook is called again with just the interaction parameter.

[teaishealthy]

Reverted the previous change because it broke the fix. It needs the else statement or else the hook is called again with just the interaction parameter.

Yeah I completely forgot the return in the if statement

[Skelmis]

Untested but overall looks fine to me

[alentoghostflame]

@okay1204 If you fix the merge conflicts, I'll look into merging this in.

Outdated and wrong