Reland "[clang] Enable sized deallocation by default in C++14 onwards" (#90373)

Since C++14 has been released for about nine years and most standard
libraries have implemented sized deallocation functions, it's time to
make this feature default again.

This is another try of https://reviews.llvm.org/D112921.

The original commit cf5a8b4 was reverted by 2e5035a due to some
failures (see #83774).

Fixes #60061

NOKEYCHECK=True
GitOrigin-RevId: 130e93cc26ca9d3ac50ec5a92e3109577ca2e702
3 files changed