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Bugfix: Refine support for LAEA grids via NetCDF and GRIB2 files  #2565

@JohnHalleyGotway

Description

@JohnHalleyGotway

Describe the Problem

Development for #1693 ADDED support for reading LAEA grids from GRIB2 files. However, it also REMOVED the existing support for reading LAEA grids from CF-compliant NetCDF files. As such, we commented out the existing unit test that tested that functionality (see <test name="plot_data_plane_LAEA_NCCF"> in unit_plot_data_plane.xml).

This task is to restore that support for reading LAEA data from CF-compliant NetCDF files. Recommend paying careful attention to Lambert azimuthal equal area documentation. And please remember to uncomment the plot_data_plane_LAEA_NCCF unit test mentioned above.

Only need to fix this for the develop branch prior to the MET-11.1.0 release.

Expected Behavior

Support LAEA grids read from both GRIB2 and CF-complaint NetCDF files.

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