Fix bug SFC action index declarations were different in POUS.c and VARIABLES.csv when boolean variables are used as action name in step action association

STD_TEST.st
STD_RESSOURCE.c
LOCATED_VARIABLES.h
POUS.c
test
STD_CONF.c
SFC_TEST.st
test.exe
plc.st
POUS.h
VARIABLES.csv