DM-46631: fix replace=True on dimensions (etc) with only primary key columns

[TallJimbo]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes
• (if changing dimensions.yaml) make a copy of dimensions.yaml in configs/old_dimensions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.71%. Comparing base (ddf0c64) to head (e75146c).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1106   +/-   ##
=======================================
  Coverage   89.71%   89.71%           
=======================================
  Files         360      360           
  Lines       47434    47451   +17     
  Branches     5732     5734    +2     
=======================================
+ Hits        42554    42571   +17     
  Misses       3518     3518           
  Partials     1362     1362           

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[andy-slac]

Looks great.