[3.13] gh-137242: Add a --no-randomize option, and use it in Android CI (GH-138649) (#138685)

Adds a --no-randomize option to the CI runner, so that randomisation can be easily
disabled for --fast-ci and --slow-ci configurations on single-threaded testing platforms
like Android, iOS, and Emscripten.

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(cherry picked from commit 01895d233b4370e0c99f16c01a57cfd73c434b28)

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Malcolm Smith <smith@chaquo.com>