CLI: Ensure to report only unrecognized sources as unrecognized

[medikoo]

Fixes invalid report, as showcased in #9442

In this scenario self reveals as unrecognized, as it targets property to be resolved with unrecognized source.

I've fixed the implementation to simply filter out all recognized sources from all reported unresolved sources (technically any source may resolve with variable that points unrecognized source, so be subject to this error)

[codecov]

Codecov Report

Merging #9449 (e64c12e) into master (8d56d0e) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

❗ Current head e64c12e differs from pull request most recent head e70891a. Consider uploading reports for the commit e70891a to get more accurate results

@@            Coverage Diff             @@
##           master    #9449      +/-   ##
==========================================
- Coverage   86.90%   86.89%   -0.02%     
==========================================
  Files         321      321              
  Lines       11976    11978       +2     
==========================================
  Hits        10408    10408              
- Misses       1568     1570       +2     

Impacted Files	Coverage Δ
scripts/serverless.js	49.60% <0.00%> (-0.40%)	⬇️

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[pgrzesik]

👍