Fix: rename UNMATCHED report status to UNUSED

[emmercm]

RE: #654

[github-actions]

🧪 Branch Testing

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/dat-status-unused" [commands..] [options]

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[codecov]

Codecov Report

Merging #668 (210280c) into main (8688d68) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #668   +/-   ##
=======================================
  Coverage   93.46%   93.46%           
=======================================
  Files          82       82           
  Lines        4867     4867           
  Branches     1057     1057           
=======================================
  Hits         4549     4549           
  Misses        301      301           
  Partials       17       17           

Files Changed	Coverage Δ
src/modules/reportGenerator.ts	100.00% <100.00%> (ø)
src/types/datStatus.ts	97.90% <100.00%> (ø)

[github-actions]

🔒 Inactive pull request lock

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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