SqlWindowsFirewall: Avoid Duplication of SQL Server Browser Firewall Rule

[jerfried]

Pull Request (PR) description

This change avoids duplicating the Browser Firewall Rule for the AS feature which leads to an error in in subsequent Test-TargetResource runs.

This Pull Request (PR) fixes the following issues

• Fixes #1942

Task list

• [x] Added an entry to the change log under the Unreleased section of the file CHANGELOG.md. Entry should say what was changed and how that affects users (if applicable), and reference the issue being resolved (if applicable).
• [ ] Resource documentation updated in the resource's README.md.
• [ ] Resource parameter descriptions updated in schema.mof.
• [ ] Comment-based help updated, including parameter descriptions.
• [ ] Localization strings updated.
• [ ] Examples updated.
• [ ] Unit tests updated. See DSC Community Testing Guidelines.
• [ ] Integration tests updated (where possible). See DSC Community Testing Guidelines.
• [x] Code changes adheres to DSC Community Style Guidelines.

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This change is 

[codecov[bot]]

Codecov Report

Merging #1944 (64e8c2e) into main (f9bde8a) will increase coverage by 0%. The diff coverage is 100%.

@@         Coverage Diff          @@
##           main   #1944   +/-   ##
====================================
  Coverage    91%     91%           
====================================
  Files        92      92           
  Lines      7808    7810    +2     
====================================
+ Hits       7183    7185    +2     
  Misses      625     625           

Flag	Coverage Δ
unit	91% <100%> (+<1%)	:arrow_up:

Impacted Files	Coverage Δ
...DSC_SqlWindowsFirewall/DSC_SqlWindowsFirewall.psm1	100% <100%> (ø)

[johlju]

Thanks for this fix! 🙇‍♂️

[jerfried]

Great pleasure, thanks for reviewing and suggesting it :)