Merge methods for randomizing state variables in canonicalCaseMap

[ReedEspinosa]

In the canonicalCaseMap.py script there is an option to chose the simulated state randomly and there is often a desire to use identical sets of randomly selected values over multiple runs. This is currently accomplished in two ways:

1. By passing the defineRandom variable which contains a set of random values generated in runRetrievalSimulation.py and then passed up the stack through setupConCaseYAML() to conCaseDefinitions().
2. By using a constant seed for the random generator at the top of the script (rnd.default_rng(seed=33)).

We should pick just one approach and reduce the redundancy.

[ReedEspinosa]

Approach (1) was created by Greema and then merged into the Main branch by @ReedEspinosa as part of commit cb3fbdd. Result was not tested so bugs may have been introduced...