fix(Rendering): rebuild buffer objects on new tcoords
fix(Rendering): rebuild buffer objects on new tcoords

the tcoord mtime was not being considered when rebuilding
the cabo buffer object resulting in some changes not
showing up, such as new lookuptable ranges with
texturemapped coloring.

Kitware/vtk-js,Kitware/vtk-js,Kitware/vtk-js,Kitware/vtk-js