runfix: Improve background edge blurring

[atomrc]

Description

We were previously trying to manually do a smoothing of the edge detected by the segmenter.
But turned out the result of the segmentation is already a float value that gives how much of the clear pixel should be used compared to the blurred pixel.

So instead of manually computing a smooth value, we can just use the segmenter's raw value

Screenshots/Screencast (for UI changes)

Before

After

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.17%. Comparing base (74d04e5) to head (51d64ab).
Report is 3 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #17615      +/-   ##
==========================================
+ Coverage   46.16%   46.17%   +0.01%     
==========================================
  Files         761      762       +1     
  Lines       25023    25023              
  Branches     5724     5723       -1     
==========================================
+ Hits        11552    11555       +3     
  Misses      12025    12025              
+ Partials     1446     1443       -3     

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[PatrykBuniX]

Great finding!