DataModelRunTests+DataModelTestDataRead+DataModelTestDataCommon: Test propagating decoration dependencies though ShallowCopy.

Add tests for using ShallowCopyDecorDeps to propagate decoration dependencies through ShallowCopy.

Do a bit of refactoring in the process: split up DataModelTestDataRead/xAODTestShallowCopy to DataModelTestDataCommon/xAODTestShallowCopy (handling only the types defined in Common) and DataModelTestDataRead/xAODTestShallowCopyHVec. Also move them to use handles, etc.

Because this moves a component between packages, there may be duplicate component warnings until there's a full rebuild.

This merge request affects 3 packages:

• Control/DataModelTest/DataModelRunTests
• Control/DataModelTest/DataModelTestDataCommon
• Control/DataModelTest/DataModelTestDataRead

Affected files list will not be printed in this case

Adding @ssnyder as watcher

added Core master review-pending-level-1 labels

CI Result SUCCESS (hash fcd60393)

	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 24598]

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

merged

mentioned in commit 00393091

added sweep:ignore label