[flang-commits] [flang] [flang][test] Fix filecheck annotation typos (PR #92387)

[Tom Eccles via flang-commits]

tblah wrote:

> Oh, flang/test/Driver/omp-cse-region-boundary.f90 fails now too.
> 
> ```
> flang/test/Driver/omp-cse-region-boundary.f90:16:18: error: CHECK-HOST-NOT: excluded string found in input
>                           CHECK-HOST-NOT: arith.constant 10
> <stdin>:14:15: note: found here
>                         %c10_i32_0 = arith.constant 10 : i32
> ```

Ping @skatrak @jsjodin @agozillon 

https://github.com/llvm/llvm-project/pull/92387