raise error if completed transform has no files

[MattShirley]

Based on #585

This will bubble the GuardList up to the results:

Files: {'uprootrawquery1': Invalid GuardList: ValueError('Transform ID 7a9451df-0f29-4eb3-a32d-c0dd3fae29b7 not found')}

After #654 is merged, the default output can be styled better to explain the error.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.23%. Comparing base (e6fe81c) to head (e93cd7f).
⚠️ Report is 15 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #657   +/-   ##
=======================================
  Coverage   97.22%   97.23%           
=======================================
  Files          29       29           
  Lines        1983     1989    +6     
=======================================
+ Hits         1928     1934    +6     
  Misses         55       55           

Flag	Coverage Δ
unittests	97.23% <100.00%> (+<0.01%)	⬆️

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[gordonwatts]

As per the SX meeting at cerh:

• Change to only use logging.warning for zero files
• Better indicate which dataset is causing this (in case user is running 10 of them). Transform title is good too. There is code to do this in the other PR Raise error when transform yields no files #662