test: rewrite spawnsync test
test: rewrite spawnsync test

The spawnsync test was written wrong, the timeout can never fire before
the sync process has returned, the delta is immaterial and times when
it was succeeding are not reliable cases.

Instead verify that the timeout doesn't fire while the sync process is
happening.

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node