Bug in 2 of the Detectors TransmittedMTOfXAndYAndSubregionHistDetector and ReflectedMTOfXAndYAndSubregionHistDetector

[lmalenfant]

Describe the bug
While looking though the serialization code to research the reconfiguration, I discovered a bug in two of the detectors. This could result in the wrong information being serialized or it could cause an exception if the data does not align.

Application (MCCL, MATLAB or VTS code):
VTS Code

Bug Locations
VTS\src\Vts\MonteCarlo\Detectors
File: TransmittedMTOfXAndYAndSubregionHistDetector.cs at line 342, this value should be Y
File: ReflectedMTOfXAndYAndSubregionHistDetector.cs at line 345, this value should be Y

Additional context
This should be fixed as a hotfix before the next release because it could produce unexpected results.

[lmalenfant]

@hayakawa16 could you update the unit tests for these detectors so in future if there was a bug, they would fail.

[hayakawa16]

Unit tests updated and run successfully.