fix: fix for deciding to wait for verification or skip to next promo

[krancour]

It's a bit of a flaw that we're potentially making some decisions here based on health assessed in a previous reconciliation loop. That being said, we can sort of get away with it because we only decide to not wait for verification when we see "unhealthy," which means we are already in dire circumstances and the next promo may be what fixes it... turns out, we should handle nil health the same way.

Strategically, @hiddeco and I are in agreement that we need bigger modifications to the stage reconciliation loop to assess health at a different point in that loop so it's ideally never nil and also more up-to-date.

I'll be opening a separate issue for this refactoring.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 48.83%. Comparing base (bfb2d64) to head (e2781af).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/controller/stages/stages.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2783   +/-   ##
=======================================
  Coverage   48.83%   48.83%           
=======================================
  Files         270      270           
  Lines       23932    23932           
=======================================
  Hits        11687    11687           
  Misses      11616    11616           
  Partials      629      629           

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