fix how we find num replicas for endpoints and collectors

[boetro]

No description provided.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (5e959fe) 74.65% compared to head (03d3ed3) 74.65%.

Files	Patch %	Lines
...tors/collector_pattern/receive_process_push_ack.py	0.00%	1 Missing ⚠️
...actors/endpoint_pattern/receive_process_respond.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #340   +/-   ##
=======================================
  Coverage   74.65%   74.65%           
=======================================
  Files         168      168           
  Lines        7561     7561           
=======================================
  Hits         5645     5645           
  Misses       1916     1916           

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