fix: display warehouses even if no stages are subscribed to it

[rbreeze]

No description provided.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.93%. Comparing base (11a956e) to head (675dd05).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1689   +/-   ##
=======================================
  Coverage   43.93%   43.93%           
=======================================
  Files         203      203           
  Lines       13061    13061           
=======================================
  Hits         5739     5739           
  Misses       7075     7075           
  Partials      247      247           

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[krancour]

I rebased this on main before test-driving it. It works perfectly, but I do notice that when I create a new Warehouse from the UI, it doesn't show up right away. If I refresh, it does show up -- meaning this PR does what it was meant to do.

I'll open a separate issue for getting the view to refresh after Warehouse creation.

[krancour]

#1697