Tests: Arc test: ignore G4Exception (just a warning)

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : OpBoun06
      issued by : G4OpBoundaryProcess
G4OpBoundaryProcess: Opticalphoton step length: 4.13138e-09 mm.
This is larger than the threshold 1e-09 mm to set status StepTooSmall.
Boundary scattering may be incorrect.

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

lcgeoTests/CMakeLists.txt

@@ -75,7 +75,7 @@ SET_TESTS_PROPERTIES( t_${test_name} PROPERTIES FAIL_REGULAR_EXPRESSION  "Except
 SET( test_name "test_ARC_o1_v01_run" )
 ADD_TEST( t_${test_name} "${CMAKE_INSTALL_PREFIX}/bin/run_test_${PackageName}.sh"
 	python3 ${CMAKE_CURRENT_SOURCE_DIR}/../example/arcfullsim.py --compactFile=${CMAKE_CURRENT_SOURCE_DIR}/../FCCee/CLD/compact/CLD_o3_v01/CLD_o3_v01.xml --runType batch  )
-SET_TESTS_PROPERTIES( t_${test_name} PROPERTIES FAIL_REGULAR_EXPRESSION  "Exception;EXCEPTION;ERROR;Error" )
+SET_TESTS_PROPERTIES( t_${test_name} PROPERTIES FAIL_REGULAR_EXPRESSION  " Exception;EXCEPTION;ERROR;Error" )
 set_tests_properties( t_${test_name} PROPERTIES TIMEOUT 120) 
 
 SET( test_name "test_ARC_o1_v01_overlap" )