PROCTools: Toggle --nan-equal while running diff-root in RunTier0Tests.py

FTAG writes out NaNs in certain cases and the standard dictates NaN!=NaN. This now affects the primary AODs in master so we're making --nan-equal the default in RunTier0Test.py.

Closes ATLASRECTS-5722

This merge request affects 1 package:

• Tools/PROCTools

Adding @amete as watcher

added Tools master review-pending-level-1 labels

CI Result SUCCESS (hash d51b6def)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 22224]

added review-approved label and removed review-pending-level-1 label

mentioned in commit efaff636

merged

added sweep:ignore label