Exclude potentially long catchpoint generation from trackerRegistry lock

[algorandskiy]

Summary

• commitRound is designed to be async op triggered by commitSyncer but tracker ops must be synchronized.
• catchpoint tracker's postCommit might take too long but in fact does not need to be in sync with other trackers

Test Plan

Use existing tests

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.57%. Comparing base (6330862) to head (fd35c4e).
Report is 2004 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3310      +/-   ##
==========================================
+ Coverage   47.54%   47.57%   +0.02%     
==========================================
  Files         369      369              
  Lines       59618    59620       +2     
==========================================
+ Hits        28347    28364      +17     
+ Misses      27969    27961       -8     
+ Partials     3302     3295       -7     

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[algorandskiy]

Closed in pref of #3311