[libcxx-commits] [libcxx] [libc++][ranges][enumerate_view] Update sentinel `equal` test (PR #222331)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

> > But have we been testing the constraints of this operator==?
> 
> Still not sure... Should we reference #74655 ?

#74655 seems to be technically unrelated and I believe it's better not to reference it in the PR description.

https://github.com/llvm/llvm-project/pull/222331