[clang] [clang][dataflow] Fix handling of cyclical data structures in HTMLLogger. (PR #66887)

[Sam McCall via cfe-commits]

https://github.com/sam-mccall approved this pull request.

The code looks good for the changes you want to make.

Personally I'd keep the existing pruning behavior for all duplicated nodes, and use cosmetic/navigation changes to clarify. But I think you probably know better than me what's useful, and at this point it isn't my call either way :-)


https://github.com/llvm/llvm-project/pull/66887