24.0-coverity2-TrigT1NSWSimTools

[minor] Address coverity performance defect, tidy headers while there

This merge request affects 1 package:

• Trigger/TrigT1/TrigT1NSWSimTools

This merge request affects 2 files:

• Trigger/TrigT1/TrigT1NSWSimTools/TrigT1NSWSimTools/MMLoadVariables.h
• Trigger/TrigT1/TrigT1NSWSimTools/src/MMLoadVariables.cxx

added 24.0 Trigger review-pending-level-1 labels

CI Result SUCCESS (hash d0d2cdc2)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
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Approving from L1 side (Fábio).

removed review-pending-level-1 label

added review-approved label

This is small & technical change ... proceeding with merge.

added review-approved-point1 label

mentioned in commit ed77dede

merged

mentioned in merge request !79333 (merged)