Fix exception tracker popping in a corner case

Fix exception tracker popping in a corner case

This change fixes exception tracker popping in case a managed exception is handled in
the CoreCLR native code. The current exception tracker has an empty scanned stack
range in that case and the existing code in the ExceptionTracker::PopTrackers was
skipping the popping in such case, considering it a case when an exception happened
while the exception tracker was being setup.
Adding check that the tracker is in the first pass to that condition fixes the problem,
since when the tracker is in the second pass, it cannot be the case in which the PopTrackers
wanted to skip the popping.
The tracker is then popped correctly in the code below.

I have also reverted a fix for the exception from filter which was conflicting with this
fix and this fix fixes the problem of the exception from filter too.