Bugfixes to SLC checks, post-LIAU

[ClaraDraper-NOAA]

Description of Changes:

Increased the lower bound allowed for soil moisture from 1 mm/layer to 0.1 mm/layer.
Also changed logic to allow soil moisture to be below the lower bound, but to prevent the DA increments themselves from reducing soil moisture below the lower bound.
The latter required moving the check into the code block where the increment is applied (and out of the do_stcsmc_adjustment conditional. This should really always be set to true, so I think this is OK.

Additional tidy up:
-removed old code monitoring the different types of updates, since the print statements for the results have been removed
-removed some excessive comments

Tests Conducted:

Compile and ran in global_workflow/ufs_model on URSA. results are as expected. The blocks of reduced sfc temps in very arid regions are now gone.

Dependencies:

N/A

Documentation:

N/A

Issue (optional):

Resolves issue #

[ClaraDraper-NOAA]

@barlage Here's the PR for the STC check we were discussing yesterday.

[ClaraDraper-NOAA]

Updated PR to also update the value used to determine freezing soils.

Some figures showing impact on model output here

[barlage]

Some figures showing impact on model output here

Access to the figures is not open

[ClaraDraper-NOAA]

Some figures showing impact on model output here

Access to the figures is not open

Thanks Mike - I just made them visible / commentable to anyone from NOAA.