Inconsistent snow variables after snow updating in GSI using IMS snow cover data.

[tanyasmirnova]

Description

Snow initialization in GFS_surface_composites.F90 should not be applied because, in case of a cold start, snow on land (or on ice) is initialized in io/FV3GFS_io.F90, and in case of a warm start, these variables are carried along from the previous forecast. This bug was discovered when snow updating from the IMS snow cover was implemented in RRFS_dev (with the use of RUC LSM). The updated in GSI cycled snow was overwritten in GFS_surface_composites.F90, causing some inconsistencies in snow variables and crashes in RUC LSM.

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Additional Context

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