chore: omit failedMessages from reporting json object

[atzoum]

Description

Reporting http api doesn't expect a failedMessages field in the payload.

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (1fcabdd) 70.20% compared to head (97c31ba) 70.38%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3936      +/-   ##
==========================================
+ Coverage   70.20%   70.38%   +0.17%     
==========================================
  Files         357      357              
  Lines       53160    53160              
==========================================
+ Hits        37321    37416      +95     
+ Misses      13585    13508      -77     
+ Partials     2254     2236      -18     

Files	Coverage Δ
utils/types/reporting_types.go	90.00% <ø> (ø)

... and 20 files with indirect coverage changes

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