BUG: Running into issues with `RadarDisplay.plot_vpt` time axis

[mgrover1]

When setting time_axis_flag = True within plot_vpt, Matplotlib runs into error stating:

TypeError: Dimensions of C (600, 1736) are incompatible with X (1736) and/or Y (601); see help(pcolormesh)

@zssherman mentioned that he had fixed this issue in another plotting view (#1025), which provides some hints on how to fix this issue..