Fix SMESH_subMesh::ComputeStateEngine() and StdMeshers_Import_1D2D::Compute()
IPAL52572: 1) Wrong bi-quadratic mesh on cylinder, 2) global "Quadratic mesh" hyp not considered on Propagated edges.
Fix SMESH_MesherHelper::FixQuadraticElements()
StdMeshers_Regular_1D - wrong PropagationOfDistribution in quadratic mesh
In SMESHGUI_MergeDlg, disable [Detect] if no mesh selected
