Fix Eigen error in 2D sphere manifolds Since Eigen does not allow to have a RowMajor column vector (see https://gitlab.com/libeigen/eigen/-/issues/416), the storage order must be set to ColMajor in that case. This fix adds that special case when generating 2D sphere manifolds. Change-Id: I594932e0dafc878e0b348f72524478588e61b34d
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