Fix calculation of the number of constituents in LLP1 augmentation

This MR adds a fix in the calculation of the number of constituents in LLP1 RCJetSubstructureAug. Now calculation takes into account the grooming applied and the corresponding decorations is adapted in consequence.

Tagging @delsart, @jburzyns.

This merge request affects 1 package:

• PhysicsAnalysis/DerivationFramework/DerivationFrameworkLLP

This merge request affects 2 files:

• PhysicsAnalysis/DerivationFramework/DerivationFrameworkLLP/DerivationFrameworkLLP/RCJetSubstructureAug.h
• PhysicsAnalysis/DerivationFramework/DerivationFrameworkLLP/src/RCJetSubstructureAug.cxx

Adding @emmat ,@jburzyns ,@dtrischu ,@jcatmore as watchers

added Derivation JetEtmiss main review-pending-level-1 labels

CI Result SUCCESS (hash 5b6e36b3)

	Athena
externals
cmake
make
tests

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For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 9897] (remote access info)

Changes look fine and CI suceeds, approving for L1.

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit 961a0357