SCC fix/refactor

[izulin]

Context

SCC code was not handling some of the logic correctly. The code is now simpler and correcter.

How has this been tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature or improvement (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Additional language file or change to the existing one (translations)

Related issue(s):

1. setSheetContent internal error #561

Checklist:

• My code follows the code style of this project,
• My change requires a change to the documentation,
• I described the modification in the CHANGELOG.md file.

[codecov]

Codecov Report

Merging #563 into develop will decrease coverage by 0.00%.
The diff coverage is 88.23%.

@@             Coverage Diff             @@
##           develop     #563      +/-   ##
===========================================
- Coverage    91.90%   91.90%   -0.01%     
===========================================
  Files          161      161              
  Lines        33495    33487       -8     
  Branches      3132     3130       -2     
===========================================
- Hits         30785    30777       -8     
  Misses        2704     2704              
  Partials         6        6              

Impacted Files	Coverage Δ
src/DependencyGraph/Graph.ts	93.00% <88.23%> (-0.17%)	⬇️

[bardek8]

Thanks! I added only some small comments to rename variables, to make it easier to read in the future.

I would also add a comment at the top of this function that it's an iterative implementation of Tarjan's algorithm for finding strongly connected compontents.