w is transformed as eFourierHalfModeRe in ProcessHalfModeToFourier
In linear stability analysis, when using half-mode expansion, u, v are eFourierHalfModeRe, and w is eFourierHalfModeIm. But in the output file of eigenvectors, u,v,w are all marked as eFourierHalfModeRe with zid=0. This makes w field transformed by ProcessHalfModeToFourier incorrect.