windows: replace AddVectoredExceptionHandler with SetUnhandledExceptionFilter

[a-teammate]

According to https://stackoverflow.com/questions/28629351/is-addvectoredexceptionhandler-a-replacement-for-setunhandledexceptionfilter AddVectoredExceptionHandler gets notified every time an exception gets thrown and does not take into account whether that exception actually gets handled by the program.

What we want is SetUnhandledExceptionFilter.