[clang] [PAC][clang][test] Fix incorrect usage of `-NOT` suffix for FileCheck (PR #212445)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

@atrosinenko Thanks for your comments! Indeed, I've accidentally forgot to add proper options in two places. Resolved in 50c3f2de956778f3894fa5b3d4d420360f0e7718

https://github.com/llvm/llvm-project/pull/212445