feat(xyMedianYAtXs): add symmetric option to shrink the window at edges

[lpatiny]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.40%. Comparing base (92c7d3a) to head (7e2527d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #402   +/-   ##
=======================================
  Coverage   97.40%   97.40%           
=======================================
  Files         215      215           
  Lines        4314     4320    +6     
  Branches     1090     1093    +3     
=======================================
+ Hits         4202     4208    +6     
  Misses        109      109           
  Partials        3        3           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.