Check if simulation range is consistent w/instrument params

[briantoby]

When supplying a simulation range for a powder pattern simulation one can supply two theta or TOF values that are outside the range where profile terms compute as negative. Bad things happen in GSAS-II when trying to simulate under such circumstances, particularly with TOF.

Example: don't want to use the standard range here:

[briantoby]

This is the instprm file that created the above:
2022B_Dec_HighRes_60HzB3_CWL2p665.instprm.txt (rename from instprm.txt to .instprm). Works fine with Tmin of 20 ms which cuts the Qmax to ~7 Å.