[clang] Enable sized deallocation by default in C++14 onwards (#83774)

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.

Fixes #60061

GitOrigin-RevId: cf5a8b489464d09dfdd7a48ce7c8b41d3c9bf819
3 files changed