[clang] Thread Safety Analysis: Fix recursive capability alias resolution (PR #159921)

[Marco Elver via cfe-commits]

melver wrote:

FYI - the refreshed Linux kernel series went out. In general, Linus Torvalds likes the feature, besides the name: https://lore.kernel.org/all/CAHk-=wgd-Wcp0GpYaQnU7S9ci+FvFmaNw1gm75mzf0ZWdNLxvw@mail.gmail.com/
In the kernel we will have to choose yet another name ("Context Analysis").

https://github.com/llvm/llvm-project/pull/159921