Change muon trigger input maker to merge by feature

Since we can find multiple SA muons in a single view, changing the input maker for the subsequent steps to merge-by-feature instead of merge-by-roi as discussed in ATR-21548. Reference updated since this affects the way the features are counted.

WARNING: big files (>100K) are found in the changeset

100K in file Trigger/TrigValidation/TrigAnalysisTest/share/ref_RDOtoRDOTrig_mt1_build.ref

This merge request affects 2 packages:

• Trigger/TrigValidation/TrigAnalysisTest
• Trigger/TriggerCommon/TriggerMenuMT

Adding @hartj ,@jpanduro as watchers

added Trigger TriggerMenu master review-pending-level-1 labels

CI Result SUCCESS (hash 34bf9611)

	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 15181]

Looks fine. Approved BA as L1

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

merged

mentioned in commit 9f502a31

added sweep:ignore label