[llvm] [MemProf] Handle missing tail call frames (PR #75823)

[Teresa Johnson via llvm-commits]

teresajohnson wrote:

> When I am back from the holiday I may just modify the patch to be conservative if there are multiple paths through tail calls in different functions.

Added the handling to make this conservative, along with a new test for that case.

https://github.com/llvm/llvm-project/pull/75823