Limit lon to -180 to 180 in lon-lat region masks

[xylar]

This is needed for grids where longitude is from 0 to 360 and it is inconvenient to modify the grid before passing it to the command-line tool.

[xylar]

We have been seeing missing SOSE data in T-S diagrams and I think this is the cause. See this example:
https://portal.nersc.gov/cfs/e3sm/xylar/analysis/E3SM-Arcticv2.1_historical0201_TS/Years1971-1990/ocean/index.html#tsDiagAntarcticRegions
Any region that only has data at negative longitudes is missing. (Regions that cross the antimeridian are probably showing only the data from positive longitudes.)

[xylar]

Testing

I tested this as part of E3SM-Unified 1.9.2rc3. The results are as expected (that SOSE data is available in T-S diagrams at all longitudes):
https://web.lcrc.anl.gov/public/e3sm/diagnostic_output/ac.xasay-davis/analysis_testing/chrysalis/test_e3sm_unified_1.9.2rc3_chrysalis/main_py3.10/ocean/index.html#tsDiagAntarcticRegions
Ignore the strange color scale -- this simulation is on a very coarse mesh.