Describe the bug

SAM UI checks added in NatLabRockies/SAM#1390 display UI error messages when critical load and load data have different time steps, but SSC does not prevent simulation from running under this condition.

To Reproduce

1. Using a build of SAM from the Patch branch that includes Critical load data length compared to load SAM#1390, open the SAM file and load the 15-minute weather file from here.
2. Go to the Grid Outage and Electric Load pages and see the error messages.
3. Run a simulation and note no simulation message.

On Data Tables tab of Results page, note that "Critical load in this timestep" and "Lifetime electricity load" are of correct length: Hourly critical load data is converted to 15-minute data.

Critical load data 60-minute input:

Resulting output, with 60-minute critical load data converted to 15-minute time steps:

Expected behavior
I would expect a simulation message if time steps do not match, but perhaps the automatic conversion is the behavior we intended?