Fix: Require all configurable rules to be explicitly configured when enabled

[localheinz]

This pull request

• requires all configurable rules to be explicitly configured when enabled
• explicitly configures all rules that are enabled and part of ExplicitRuleSets

Follows #642.

[codecov]

Codecov Report

Merging #644 (a4e1c93) into main (774bdb0) will not change coverage.
The diff coverage is n/a.

❗ Current head a4e1c93 differs from pull request most recent head c0a2688. Consider uploading reports for the commit c0a2688 to get more accurate results

@@             Coverage Diff             @@
##                main      #644   +/-   ##
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  Coverage     100.00%   100.00%           
  Complexity         7         7           
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  Files              2         2           
  Lines             20        20           
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  Hits              20        20           

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