skip QLSpectraReshapeError in LB to L0 step

[nicHoch]

should stop the often error mails that the ql spectra can not processed from LB to L0 as still packetes are missing

[codecov-commenter]

Codecov Report

❌ Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.05%. Comparing base (3ae9671) to head (b8858a9).
⚠️ Report is 13 commits behind head on master.

Files with missing lines	Patch %	Lines
stixcore/processing/LBtoL0.py	20.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #454      +/-   ##
==========================================
- Coverage   72.23%   68.05%   -4.18%     
==========================================
  Files          78       78              
  Lines        8085     8308     +223     
==========================================
- Hits         5840     5654     -186     
- Misses       2245     2654     +409     

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