Detector shape for predicted sectors

[ben-cassese]

Hello!

In tesswcs.py, when creating a WCS for a sector that's already been archived, the attribute wcs.pixel_shape is set to (wcs.pixel_shape = (rcolumns, rrows). This correctly sets the detector shape to 2136 x 2078. However, when creating a new WCS for a predicted sector, wcs.pixel_shape is set to wcs.pixel_shape = (rrows, rcolumns), which incorrectly flips the order. Note that pixel_shape sets the order of the wcs._naxis array, which is then used elsewhere.