[clang] [clang-format] Set Context.IsExpression for C++ ternary operators (PR #206300)

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owenca wrote:

> I still think `and` should just be what it says.

We don't need to special case `and`, an alternative spelling of `tok::ampamp` when determining if it's the binary operator. Annotating the token correctly takes care of both `&&` and `and`.



https://github.com/llvm/llvm-project/pull/206300