Fix default enabled debug output during realm-sync-tests #6234
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What, How & Why?
When the log level threshold was updated to be atomic, the
IntraTestLogger
was updated to provide its own log level threshold, but this value was not being used properly by subsequent loggers that were linked to this object. An instance of theIntraTestLogger
is used by each of the test threads in a unit test run to prevent changes in one thread from affecting the other threads, but they all print out using a single root logger (protected by aThreadSafeLogger
) that is created when the test is started.Fix the level threshold in the
IntraTestLogger
so it has its own atomic log level threshold that is used by linked loggers.Fixes #6233
☑️ ToDos
[ ] C-API, if public C++ API changed.