Update JGLOBAL_FORECAST for octal error (NOAA-EMC#2295)

Add "10#" to ENSMEM value > 0 check to handle octal errors.

Author: KateFriedman-NOAA

jobs/JGLOBAL_FORECAST

@@ -1,7 +1,7 @@
 #! /usr/bin/env bash
 
 source "${HOMEgfs}/ush/preamble.sh"
-if (( ${ENSMEM:-0} > 0 )); then
+if (( 10#${ENSMEM:-0} > 0 )); then
   source "${HOMEgfs}/ush/jjob_header.sh" -e "efcs" -c "base fcst efcs"
 else
   source "${HOMEgfs}/ush/jjob_header.sh" -e "fcst" -c "base fcst"