[ThrowingExceptionInMain] [ExitOutsideMainfix] fix for KtNamedFunction.isMainFunction()

[krzykrucz]

Fixes the issue that vararg variation of main function was not taken into account in KtNamedFunction#isMainFunction.

As a result fixes also rules using this function: ThrowingExceptionInMain, ExitOutsideMain.

[codecov]

Codecov Report

Merging #3641 (1109cb9) into main (2dd29ef) will decrease coverage by 0.00%.
The diff coverage is 33.33%.

❗ Current head 1109cb9 differs from pull request most recent head 2d2e045. Consider uploading reports for the commit 2d2e045 to get more accurate results

@@             Coverage Diff              @@
##               main    #3641      +/-   ##
============================================
- Coverage     78.14%   78.13%   -0.01%     
  Complexity     2833     2833              
============================================
  Files           467      467              
  Lines          9133     9135       +2     
  Branches       1733     1735       +2     
============================================
+ Hits           7137     7138       +1     
  Misses         1058     1058              
- Partials        938      939       +1     

Impacted Files	Coverage Δ	Complexity Δ
.../gitlab/arturbosch/detekt/rules/MethodSignature.kt	57.89% <33.33%> (-0.93%)	0.00 <0.00> (ø)

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[BraisGabin]

Good catch!