SiDigitization+SCT_Digitization+StripDigitization: Update for thread-safety checker const changes.

The thread-safety checker is getting more strict on const checks. Fix resulting warnings.

This merge request affects 3 packages:

• InnerDetector/InDetDigitization/SCT_Digitization
• InnerDetector/InDetDigitization/SiDigitization
• InnerDetector/InDetDigitization/StripDigitization

Affected files list will not be printed in this case

Adding @jchapman ,@goetz ,@sroe as watchers

added Digitization InnerDetector master review-pending-level-1 labels

CI Result SUCCESS (hash 4341231b)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional 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
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 44818]

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

merged

mentioned in commit e3445e5b

added sweep:ignore label