LumiBlockComps+RecExCommon+TriggerTest: MuWriter fixes

• LumiBlockMuWriter allows the input conditions handle key to be empty. In that case, it will write the decorations as 0. LumiBlockMuWriter is enabled for cosmic runs as well, with this configuration.

• If the decorations already exist, they won't be overwritten.

• If both online and mc are enabled, mc takes precedence.

• Enable LumiBlockMuWriter for cosmic runs.

• One trigger test needs to explicitly configure LumiBlockMuWriter.

See ATR-21360.

This merge request affects 3 packages:

• LumiBlock/LumiBlockComps
• Reconstruction/RecExample/RecExCommon
• Trigger/TrigValidation/TriggerTest

Adding @goetz ,@hartj ,@jpanduro as watchers

added DQ Reconstruction Trigger master review-pending-level-1 labels

CI Result SUCCESS (hash 0b7c6f11)

	Athena	AthSimulation	AnalysisBase	AthGeneration
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
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 14256]

The changes look good to me, and CI passes. Approving.

Xiaozhong (L1)

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

merged

mentioned in commit 48ab2ba4

added sweep:ignore label