fix: improve detection of userEvent.setup() calls

[puglyfe]

Checks

• I have read the contributing guidelines.

Changes

• Improve detection of async event methods called on userEvent sessions

Context

I had a little bit of familiarity with this from a previous fix, so figured I would take a shot at resolving the issue. There are a huge number of edge cases in trying to support this pattern, and I almost certainly haven't covered them all. But I specifically addressed the example in the original bug report as well as the related example that's shown in the testing-library docs.

Fixes #812

[codecov]

Codecov Report

❌ Patch coverage is 98.73418% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.52%. Comparing base (2e7e1b6) to head (347b2cd).

Files with missing lines	Patch %	Lines
lib/rules/await-async-events.ts	98.48%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1056      +/-   ##
==========================================
+ Coverage   96.46%   96.52%   +0.05%     
==========================================
  Files          50       50              
  Lines        2687     2760      +73     
  Branches     1112     1154      +42     
==========================================
+ Hits         2592     2664      +72     
- Misses         95       96       +1     

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