[Chapel Merge] Turn on Qthreads testing in the multilocale playground

Branch: refs/heads/main
Revision: 70abc12a040621707a2c2933ed9d47b1e21c98cc
Author: bradcray
Link: Turn on Qthreads testing in the multilocale playground by bradcray · Pull Request #26882 · chapel-lang/chapel · GitHub
Log Message:
Turn on Qthreads testing in the multilocale playground (#26882)

[trivial-ish, reviewed-ish by Jade last week in #26870]

This turns Qthreads testing back on in the multilocale playground now that we've merged GASNet testing and tested that the playground's status remains blue when it's unused.

Compare: Comparing 97e8d9a2c7bd73129ff21067f966445f4166b20f...c44870eb2e5b443a3adcdef2722cbe71924a71bb · chapel-lang/chapel · GitHub

Diff:
M util/cron/test-perf.hpe-apollo-hdr.gasnet-ibv.playground.bash
https://github.com/chapel-lang/chapel/pull/26882.diff