trho(2) not set in w3iorsmd

[DeniseWorthen]

Describe the bug

An initial value for TRHO(2) is not provided.

WW3/model/src/w3iorsmd.F90

Lines 1300 to 1309 in abc77b9

	ELSE
	TLEV(1) = -1
	TLEV(2) = 0
	TICE(1) = -1
	TICE(2) = 0
	TRHO(1) = -1
	TIC1(1) = -1
	TIC1(2) = 0
	TIC5(1) = -1
	TIC5(2) = 0

This resulted in an unexpected failure for the mesh cap, when adding additional export fields for the Coastal App. See ufs-community/ufs-weather-model#2367 for details.

It is unknown whether this impacts WW3 standalone RTs.

Expected behavior
TRHO(2) should have an initial value set.

[MatthewMasarik-NOAA]

@DeniseWorthen this is interesting, thank you for documenting it. I will look into whether it has an impact on the standalone WW3 regtests.

[MatthewMasarik-NOAA]

It is unknown whether this impacts WW3 standalone RTs.

@DeniseWorthen from some quick initial standalone testing, this fix alone doesn't seem to change the regtest outcomes.