Set configflags argument of TRIG8 slimming helper

This should fix the crash in the TRIG8 ART test. Follows the update in !59221 (merged) which passed the CA flags into the slimming helper.

cc @calpigia

PhysicsAnalysis/DerivationFramework/DerivationFrameworkTrigger/python/TRIG8.py

@@ -178,7 +178,7 @@ def TRIG8Cfg(ConfigFlags):
     from xAODMetaDataCnv.InfileMetaDataConfig import SetupMetaDataForStreamCfg
     from DerivationFrameworkCore.SlimmingHelper import SlimmingHelper
 
-    TRIG8SlimmingHelper = SlimmingHelper("TRIG8SlimmingHelper", NamesAndTypes = ConfigFlags.Input.TypedCollections)
+    TRIG8SlimmingHelper = SlimmingHelper("TRIG8SlimmingHelper", NamesAndTypes = ConfigFlags.Input.TypedCollections, ConfigFlags = ConfigFlags)
 
     TRIG8SlimmingHelper.SmartCollections = ["EventInfo",
                                             "Electrons",