Allow to turn FPE checks off

Follow-up to !57793 (merged). The unit-test TrigEventAthenaPool_15.6.1_ctest fails with an FPE (invalid operation) that I can trace back to python's float_richcompare called from PyDumper/Dumpers.py. I suspect a invalid value in the input file.

As stopgap solution, this MR adds an option to turn FPE-checks entirely off and uses this option in TPCnvTestConfig.py

cc @tadej , @christos

Control/AthenaConfiguration/python/AllConfigFlags.py

@@ -24,7 +24,7 @@ def _createCfgFlags():
     acf.addFlag('Exec.MaxEvents',-1)
     acf.addFlag('Exec.SkipEvents',0)
     acf.addFlag('Exec.DebugStage','')
-    acf.addFlag('Exec.FPE',0) #-1: Abort with core-dump, 0: FPE Auditor w/o stack-tace, >0: number of stack-trace printed by the job
+    acf.addFlag('Exec.FPE',0) #-2: No FPE check at all, -1: Abort with core-dump, 0: FPE Auditor w/o stack-tace (default) , >0: number of stack-trace printed by the job
 
     acf.addFlag('ExecutorSplitting.TotalSteps', 0)
     acf.addFlag('ExecutorSplitting.Step', -1)