Add additional logs for remote dispatch and change to use a non-empty placeholder

[josephschorr]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.53%. Comparing base (05f1566) to head (fdcc8b0).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/dispatch/remote/cluster.go	33.34%	8 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2914      +/-   ##
==========================================
+ Coverage   74.51%   74.53%   +0.03%     
==========================================
  Files         484      484              
  Lines       59201    59213      +12     
==========================================
+ Hits        44109    44130      +21     
+ Misses      11995    11990       -5     
+ Partials     3097     3093       -4     

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