kernel: Update standard_error to use prim_tty nif #9116
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The primary reason that we do this is to make writing to standard_error as synchronous as possible. When using the fd driver the write was done on an async thread, which meant that there was no simple way to get an acknowledgement when the write had completed. Now that we use a NIF we can much more easily get a check when the write is done so that we know when io:format(standard_error, ...) has returned we have also written to that fd.
standard_error is started before the on_load handlers in init are run, so prim_tty will not be completely loaded when running in embedded mode. So we call it during init of prim_tty instead.
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The primary reason that we do this is to make writing to standard_error as synchronous as possible. When using the fd driver the write was done on an async thread, which meant that there was no simple way to get an acknowledgement when the write had completed. Now that we use a NIF we can much more easily get a check when the write is done so that we know when io:format(standard_error, ...) has returned we have also written to that fd.