Merge in CASA/casa6 from CAS-14210 to release/6.6.1
* commit '50a3d8035c9a753eacb27ee492fb93a3a88a976e':
Fix argument added to wrong function call
Add fix and test for showfdm overlay colors
Fix overlay colors bug in showfdm
Add plotbandpass test for time overlay colorization
Shift plotbandpass overlay color list if multiple times have same color