Add additional filter check for reports and regressions

[nharper285]

Summary of the Pull Request

What is this about?
Add additional filter condition to catch source-coverage.json files.

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

What does this include?

Validation Steps Performed

How does someone test & validate?

[codecov-commenter]

Codecov Report

Merging #2911 (f1f8e5c) into main (8a7a0b0) will decrease coverage by 0.01%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main    #2911      +/-   ##
==========================================
- Coverage   28.06%   28.06%   -0.01%     
==========================================
  Files         302      302              
  Lines       35811    35816       +5     
==========================================
  Hits        10050    10050              
- Misses      25761    25766       +5     

Impacted Files	Coverage Δ
src/ApiService/ApiService/onefuzzlib/Reports.cs	64.44% <50.00%> (ø)
src/ApiService/ApiService/OneFuzzTypes/Model.cs	69.35% <0.00%> (-0.09%)	⬇️
src/ApiService/ApiService/onefuzzlib/Defs.cs	0.00% <0.00%> (ø)
src/ApiService/ApiService/onefuzzlib/Config.cs	0.00% <0.00%> (ø)

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[Porges]

We should also be able to write a test for this using the existing implementations we have for the Azurite emulator... let me know if you want any help putting one together.