[Chapel Merge] Skip Shlex tests if CHPL_RE2=none

Branch: refs/heads/main
Revision: 908f24e
Author: ben-albrecht
Link: https://github.com/chapel-lang/chapel/pull/19192
Log Message:

Merge pull request #19192 from ben-albrecht/skipifre2noneshlex

Skip Shlex tests if CHPL_RE2=none

Skip Shlex tests if re2=none to fix quickstart configuration in nightly testing

[Trivial, unreviewed]

Modified Files:
A test/library/draft/Shlex/API/SKIPIF

Compare: https://github.com/chapel-lang/chapel/compare/e0b0f421b478...908f24e970e8