feat: Provide Guild ID in GuildLeft event

[silasary]

Pull Request Type

• Feature addition
• Bugfix
• Documentation update
• Code refactor
• Tests improvement
• CI/CD pipeline enhancement
• Other: [Replace with a description]

Description

Occasionally, a bot can recieve a GuildLeave event from an uncached guild. If a user needs to do cleanup, we should provide an ID for them.

Changes

• Add guild_id field, and pass it in to the event dispatch.

Related Issues

https://discord.com/channels/789032594456576001/1113659088061083699

Test Scenarios

Python Compatibility

• I've ensured my code works on Python 3.10.x
• I've ensured my code works on Python 3.11.x

Checklist

• I've run the pre-commit code linter over all edited files
• I've tested my changes on supported Python versions
• I've added tests for my code, if applicable
• I've updated / added documentation, where applicable

[codecov-commenter]

Codecov Report

Patch coverage: 75.00% and project coverage change: -0.11 ⚠️

Comparison is base (635dee7) 60.24% compared to head (8e39bad) 60.13%.

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Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1435      +/-   ##
============================================
- Coverage     60.24%   60.13%   -0.11%     
============================================
  Files           139      139              
  Lines         14702    14705       +3     
============================================
- Hits           8857     8843      -14     
- Misses         5845     5862      +17     

Impacted Files	Coverage Δ
interactions/api/events/processors/guild_events.py	70.14% <0.00%> (ø)
interactions/api/events/discord.py	99.64% <100.00%> (+<0.01%)	⬆️

... and 4 files with indirect coverage changes

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