Changing eagarDisabled field initial value to reflect the expected default value

(cherry picked from commit f3143a633f38493fcdcba35065e4b92487c0eeab)
BZ-1161574 - 'java.lang.RuntimeException: Process instance XXX is disconnected.' with SingletonRuntimeManager without CMT/BMT

(cherry picked from commit f082b82c9047ee41c82001d7c0d86673f1eda82d)