Fixed two failing test, removed 1 failing test because this is no longer a valid one (input is based on Spencer which is now no longer allowed in MacroStablityInwards kernel. Related to Issue [MWDAM-1383]
Implemented NOT the StabilityKernelType but added the kernel as FailureMechanismSystemType by adding WtiStabilityInside as mechanism. Removed StabilityKernelType as this is NOT to be used in the DamEngine. Related to Issue [MWDAM-1383]