[clang] [clang] Diagnose dangling issues for the "Container<GSLPointer>" case. (PR #107213)

[Arthur Eubanks via cfe-commits]

aeubanks wrote:

this looks like it has false positives: https://crbug.com/366074092

can we revert in the meantime?

https://github.com/llvm/llvm-project/pull/107213