[llvm] Make STLExtras's (all|any|none)_of() Utility Functions Constexpr-Friendly (PR #172536)

[Michał Górny via llvm-commits]

mgorny wrote:

And for the record, yes, I find this weird as well, that's why I've checked three times. LLVM+Clang built on previous commit (33d7cd67a829d8064ca4e2b83186de8cddfae3cd) works, with this commit (21fd8cc2a5584795107f384c5bf8d36c141188fc) and later, fails.

Might be related that I'm building them with GCC 15.2.1.

https://github.com/llvm/llvm-project/pull/172536