[Chapel Merge] Skip this test when doing valgrind testing on the executable

Branch: refs/heads/main
Revision: 1d51c7f261930ee8b6fc359552630ec74bb7ab62
Author: bradcray
Link: Skip this test when doing valgrind testing on the executable by bradcray · Pull Request #28646 · chapel-lang/chapel · GitHub
Log Message:
Skip this test when doing valgrind testing on the executable (#28646)

[trivial, not reviewed]

It's not obvious to me why this would be more likely to succeed in
valgrind testing than other configurations (maybe increased likelihood
of serialization?), yet we've seen 12+ such cases in the past year or so,
and we're also not getting much good out of valgrind-based testing of
this future, so let's just skip it until the future is retired.

Resolves https://github.com/Cray/chapel-private/issues/7297

Compare: Comparing 05917e10a4017a3e52c76df458e1d6047d1a657f...d845d9991604a4766073f8866f0ab2296e8744b9 · chapel-lang/chapel · GitHub

Diff:
M test/users/ferguson/string_reduce.skipif
https://github.com/chapel-lang/chapel/pull/28646.diff