Prwlr 7830 fix how scores are calculated in prowler threat score

[pedrooot]

Context

Please include relevant motivation and context for this PR.

If fixes an issue please add it with Fix #XXXX

Description

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Steps to review

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Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.
• Review if is needed to change the Readme.md
• Ensure new entries are added to CHANGELOG.md, if applicable.

API

• Verify if API specs need to be regenerated.
• Check if version updates are required (e.g., specs, Poetry, etc.).
• Ensure new entries are added to CHANGELOG.md, if applicable.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: api/src/backend/tasks/jobs/scan.py

Function	Unhandled Issue
create_compliance_requirements	Scan.DoesNotExist: Scan matching query does not exist. scan-compliance-ove... Event Count: 2

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[github-actions]

⚠️ Changes detected in the following folders without a corresponding update to the CHANGELOG.md:

• api
• prowler

Please add an entry to the corresponding CHANGELOG.md file to maintain a clear history of changes.

[codecov]

Codecov Report

❌ Patch coverage is 26.08696% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.45%. Comparing base (89e6575) to head (5d999bd).
⚠️ Report is 40 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #8582       +/-   ##
===========================================
+ Coverage   75.69%   89.45%   +13.75%     
===========================================
  Files          98      200      +102     
  Lines        5657    17253    +11596     
===========================================
+ Hits         4282    15433    +11151     
- Misses       1375     1820      +445     

Flag	Coverage Δ
api	95.04% <61.11%> (?)
prowler	74.79% <3.57%> (-0.91%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
prowler	74.79% <3.57%> (-0.91%)	⬇️
api	95.04% <61.11%> (∅)

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