fix the density of the frozen precip types

[HelinWei-NOAA]

Description

The snow density is used for all frozen precip types in the current operational GFS. With this assumption the density for sleet or freezing rain is too small and the snow depth is overestimated in this situation. This fix will give the different density to snow, graupel, and freezing rain in the Noah LSM driver.

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Additional context

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• ufs-weather-model PR 1267
• fv3atm PR 546

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[junwang-noaa]

The code is merged. The issue will be closed.