Downgrade error to warning when retrying because of message too large

[tevoinea]

Summary of the Pull Request

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PR Checklist

• [ ] Applies to work item: #xxx
• [ ] CLA signed. If not, go over here and sign the CLI.
• [ ] Tests added/passed
• [ ] Requires documentation to be updated
• [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx

Info on Pull Request

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Validation Steps Performed

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[codecov-commenter]

Codecov Report

Merging #3224 (c4ca645) into main (db1e489) will increase coverage by 0.00%. The diff coverage is 66.66%.

@@           Coverage Diff           @@
##             main    #3224   +/-   ##
=======================================
  Coverage   29.54%   29.55%           
=======================================
  Files         332      332           
  Lines       39197    39199    +2     
=======================================
+ Hits        11581    11584    +3     
+ Misses      27616    27615    -1     

Impacted Files	Coverage Δ
src/ApiService/ApiService/onefuzzlib/Queue.cs	40.33% <66.66%> (+1.01%)	:arrow_up:

... and 1 file with indirect coverage changes