ReadDecorHandleKey: Fix for updated parent container name.

As @fwinkl pointed out, the ReadDecorHandlKey has the same bug that MR !64118 (merged) fixed for the WriteDecorHandleKey. This MR applies the same code-change to ReadDecorHandleKey.icc

At the same time, extend the existing unit-tests to cover the case of a parent-container key being updated before initialize()

added full-integration-tests full-unit-tests labels

This merge request affects 1 package:

• Control/StoreGate

This merge request affects 3 files:

• Control/StoreGate/StoreGate/ReadDecorHandleKey.icc
• Control/StoreGate/test/ReadDecorHandleKey_test.cxx
• Control/StoreGate/test/WriteDecorHandleKey_test.cxx

Adding @ssnyder as watcher

added 23.0 Core review-pending-level-1 labels

CI Result FAILURE (hash 7487413c)

	Athena	AthSimulation	AthGeneration	AthAnalysis
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 74018]

Unrelated unit test failure.

removed review-pending-level-1 label

added review-approved label

added review-approved-tier0 label

added review-approved-point1 label

merged

mentioned in commit 57b9e067

mentioned in merge request !64217 (merged)