tests/core/thread_msg: lower thread priority for consistent output order #20989
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Contribution description
For some reason, the threads are (seemingly?) scheduled differently on
nrf52840dk
andfeather-nrf52840-sense
, at least the output order is not consistent. This PR changes the child threads to have a lower priority than the main thread so that "THREADS STARTED" is always printed first.Testing procedure
make -C tests/core/thread_msg BOARD=feather-nrf52840-sense flash test
fails on master, passes with this PR
Issues/PRs references
Encountered while working on #20980