Missing Stokes production term in vwtend

[amrapallig]

@vanroekel @BrodiePearson

vwtend6 ( Stokes production term) is missing in the summation.

MPAS-Model/src/core_ocean/shared/mpas_ocn_adcReconstruct.F

Lines 803 to 804 in 1a3f760

	vwtend(i3_f,k,iCell) = vwtend1(k,iCell) + vwtend2(k,iCell) + &
	vwtend3(k,iCell) + vwtend4(k,iCell) + vwtend5(k,iCell)

Here is the plot showing the current commit and adding vwtend6 term (instantaneous data at 96th hour outout) for the following parameters:

config_adc_La_t = 0.3
config_adc_stokes_depth = 4.8
config_adc_alpha_st_0 = 0.5
config_adc_alpha_st_1 = 1.4
config_adc_alpha_st_2 = -0.5
config_adc_alpha_st_tracer1 = 0.6
config_adc_alpha_st_tracer2 = -1.0
config_adc_alpha_0 = 0.8
config_adc_alpha_1 = 0.984
config_adc_alpha_2 = 0.568
config_adc_alpha_tracer1 = 0.6
config_adc_alpha_tracer2 = 1.0