[clang] [Clang][AST][NFC] Store template parameter position for TemplateTypeParmType in TypeBit (PR #102481)

[Matheus Izvekov via cfe-commits]

https://github.com/mizvekov approved this pull request.

LGTM

Are there any performance numbers worth mentioning?

https://github.com/llvm/llvm-project/pull/102481