[clang] [lldb] [Clang] Introduce OverflowBehaviorType for fine-grained overflow control (PR #148914)

[Justin Stitt via cfe-commits]

JustinStitt wrote:

ping.

rebased and fixed tests after `Commit b24769855d97: [Clang] [Sema] Make -Wincompatible-pointer-types an error by default (#157364)` caused some tests to fail.

https://github.com/llvm/llvm-project/pull/148914