fix: handled promises assigned to vars are valid

[puglyfe]

Checks

• I have read the contributing guidelines.

Changes

This tweaks the logic in isAssigningKnownAsyncFunctionWrapper to account for return values being assigned to variables. This only impacted await-async-utils, as it is less common to assign the result of an async util to a variable than it is an async query. I've added additional test cases to await-async-queries and await-async-events to explicitly protect against regressions in this behavior.

Context

Fixes #1046

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.49%. Comparing base (35e2b40) to head (a595532).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1047   +/-   ##
=======================================
  Coverage   96.48%   96.49%           
=======================================
  Files          49       49           
  Lines        2678     2681    +3     
  Branches     1107     1112    +5     
=======================================
+ Hits         2584     2587    +3     
  Misses         94       94           

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