Linter: `html-no-duplicate-attributes` should respect ERB Control Flow

[marcoroth]

Bug Report

The html-no-duplicate-attributes linter rule should report this using a Duplicate attribute "class" found on tag. Remove the duplicate occurrence. error:

<div 
  class="post"

  <% if active? %> 
    class="active" 
  <% end %> 
>
</div>

Playground

https://herb-tools.dev/playground#DwEwlgbgBAUFUGMA2BDAzmgvAIgA4Hs0AXbGOKYAUijADMoUEjIBTAfikoD5Z55l0WbI2YQW2XhWosAdiE48YXGMAD04CMpUbJAjDgLFS-VPuFNWEpSvWQuQA

Additional Context

With #444 we introduced the ControlFlowTrackingVisitor that should allow us to implement this.