The double equal '==' is a common operator in a few contexts. I am using it for haystack operators, but there is also Python, Javascript, etc.

Currently if == appears in an enum its name gets sanitized to empty and generates invalid syntax. This problem is very similar to the one fixed in #12801 , so I am suggesting the same fix here.

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
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  ./bin/utils/export_docs_generators.sh
  

  (For Windows users, please run the script in Git BASH)
  Commit all changed files.
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