[jacodb-ets] Change 'arg' in AwaitExpr to be Local

[Lipen]

This PR changes arg in EtsAwaitExpr to be EtsLocal instead of an arbitrary value.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 70.19%. Comparing base (6268593) to head (65b8538).
Report is 1 commits behind head on neo.

Files with missing lines	Patch %	Lines
...-ets/src/main/kotlin/org/jacodb/ets/dto/Convert.kt	0.00%	1 Missing ⚠️
...b-ets/src/main/kotlin/org/jacodb/ets/model/Expr.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##                neo     #329   +/-   ##
=========================================
  Coverage     70.19%   70.19%           
  Complexity     2493     2493           
=========================================
  Files           275      275           
  Lines         15462    15462           
  Branches       2307     2307           
=========================================
  Hits          10854    10854           
  Misses         3689     3689           
  Partials        919      919           

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[github-actions]

Test Results

  215 files  ±0    215 suites  ±0   16m 20s ⏱️ -13s
  711 tests ±0    706 ✅ ±0   5 💤 ±0  0 ❌ ±0 
1 977 runs  ±0  1 948 ✅ ±0  29 💤 ±0  0 ❌ ±0 

Results for commit 65b8538. ± Comparison against base commit 6268593.