feat(csharp): adds a missed first or default opprtunity rule - #22485

Warning: Code scanning cannot determine the alerts introduced by this pull request, because 4 configurations present on refs/heads/main were not found:

Actions workflow (rust-analysis.yml)

• ❓  .github/workflows/rust-analysis.yml:analyze/language:rust

Actions workflow (csv-coverage-metrics.yml)

• ❓  .github/workflows/csv-coverage-metrics.yml:publish-csharp
• ❓  .github/workflows/csv-coverage-metrics.yml:publish-java

Actions workflow (cpp-swift-analysis.yml)

• ❓  .github/workflows/cpp-swift-analysis.yml:CodeQL-Build

View all branch alerts.