Describe the bug

For PVWatts, the Edit Shading Data window listbox for Strings in Subarray 1 input is hidden behind the label for Time Step in Minutes:

Need to check what the desired behavior for this is: Should partial shading mode be available for PVWatts? The number of modules per string and modules in array is hard-coded in cmod_pvwattsv8.cpp ('pv.nmodperstrandpv.nmodules`. Shading input for Strings in Subarray 1 needs to be set to that value, or partial shading model option should be disabled (and hidden on Edit Shading Data page) for PVWatts. (Also consider that PySAM users need to know how to set this shading option for the Pvwattsv8 module.)

Note correct alignment for Detailed PV:

To Reproduce

Steps to reproduce the behavior:

1. Create a PVWatts case.
2. Click Edit shading on System Design, Advanced Inputs.
3. Check Enable beam irradiance shading losses by time step.
4. Check Enable partial shading model (c-Si modules only).