TrigT1: Optimize overuse of shared_pointer

using std::pointer_cast on shared_pointer is inappropriate (slow) for short-lived objects.

This merge request affects 5 packages:

• Trigger/TrigT1/TrigT1CaloSim
• Trigger/TrigT1/TrigT1CaloTools
• Trigger/TrigT1/TrigT1CaloUtils
• Trigger/TrigT1/TrigT1Interfaces
• Trigger/TrigT1/TrigT1NSWSimTools

Affected files list will not be printed in this case

Adding @jmharris ,@thompson ,@orlando ,@bcarlson ,@paulama ,@asonay ,@cmorenom ,@oliveirg as watchers

added JetEtmiss Tau Trigger main review-pending-level-1 labels

CI Result SUCCESS (hash a8496b18)

	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

merged

mentioned in commit 89c40a98