Fix MaxLineLengthSuppressed ignoring @Suppress annotation on class

[cortinico]

Fixes #3136

The MaxLineLength rule was failing to pickup the parent KtElement when reporting a line from a long comment. This caused the @Suppress annotation on the class to be ignored.

[codecov]

Codecov Report

Merging #3164 into master will decrease coverage by 0.03%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #3164      +/-   ##
============================================
- Coverage     79.51%   79.47%   -0.04%     
+ Complexity     2599     2596       -3     
============================================
  Files           437      437              
  Lines          7865     7860       -5     
  Branches       1497     1498       +1     
============================================
- Hits           6254     6247       -7     
- Misses          817      818       +1     
- Partials        794      795       +1     

Impacted Files	Coverage Δ	Complexity Δ
...in/io/gitlab/arturbosch/detekt/rules/style/Junk.kt	100.00% <100.00%> (ø)	0.00 <0.00> (ø)
...lab/arturbosch/detekt/rules/style/MaxLineLength.kt	79.41% <0.00%> (-5.89%)	22.00% <0.00%> (-1.00%)
...n/io/github/detekt/report/html/HtmlOutputReport.kt	94.28% <0.00%> (-0.46%)	18.00% <0.00%> (-2.00%)

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