[clang] [llvm] Add release note entry for max/min (PR #131977)

[YunQiang Su via cfe-commits]

wzssyqa wrote:

Since we have still some problem to be fixed. So this PR is set a draft.
Wish that we can fix all of these problems in the cycle of LLVM 21.

https://github.com/llvm/llvm-project/pull/131977