Ensure comparer changed is subscribed to before data changed for list

[RolandPheasant]

Fixes #473

[codecov-commenter]

Codecov Report

Merging #476 (6b88f5c) into main (c6234b0) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #476   +/-   ##
=======================================
  Coverage   71.45%   71.45%           
=======================================
  Files         214      214           
  Lines       10655    10655           
=======================================
  Hits         7613     7613           
  Misses       3042     3042           

Impacted Files	Coverage Δ
src/DynamicData/List/Internal/Sort.cs	89.81% <100.00%> (ø)

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.