L1TopoSimulationUtils+L1TopoCoreSim: Fix cppcheck warning.

Pass strings by const reference, not by value.

This merge request affects 2 packages:

• Trigger/TrigT1/L1Topo/L1TopoCoreSim
• Trigger/TrigT1/L1Topo/L1TopoSimulationUtils

Affected files list will not be printed in this case

Adding @oliveirg ,@iriu ,@asonay ,@stelzer ,@cmorenom ,@jchapman ,@orlando ,@paulama ,@jmharris as watchers

added Trigger main review-pending-level-1 labels

CI Result SUCCESS (hash 6fbba7db)

	Athena	DetCommon
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 5968] (remote access info)

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

lgtm

mentioned in commit 1ccf3d04

merged