Cherry pick 28569: diff-root fixes

This is a cherry pick of some diff-root fixes from !28569 (merged)

This merge request affects 2 packages:

• PhysicsAnalysis/DerivationFramework/DerivationFrameworkCore
• Tools/PyUtils

added Derivation Tools master review-pending-level-1 labels

CI Result SUCCESS (hash 28f2eeba)

	Athena	AthSimulation
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 9064]

Changes and CI look good. Approving.

Kira (L1)

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

merged

mentioned in commit 9167c1ae

added sweep:ignore label