RSpec::Core::MultipleExceptionError not serialised properly #6
Description
When an RSpec test has more than one failure in the same spec, the exceptions for each of the failures are wrapped up in an RSpec::Core::MultipleExceptionError. Currently, we only serialise the top-level error when a test case fails, which means that in these cases the only thing you see in the UI for failed tests is the container error.
The RSpec serialisation code needs changing so that if the error for a test is this one, that it serialises each of the errors contained within, in a way that displays clearly in VSC