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Split isolation at photon chains

This MR is to tackle issue discussed in ATR-26113.

PrecisionPhoton stage currently runs PhotonID (cut based) and also applies calorimeter isolation on isolated chains. CaloIsolation requires FS Topo clusters. Currently FS Topo is executed at precision stage for all photonchains.

Here I split the precision Photon in two steps:

  • PrecisionPhoton (only photon ID)
  • PhotonCaloIso (FS Topo + calo iso)
  • This is implemented in a new hypo TrigEgammaPrecisionPhotonHypo introduced here
  • Photon Menu sequence configuration is tidied up a bit too

Pinging @cjmeyer @safarzad @dbakshig @tamartin @aranzazu @rhowen and @khoo

Edited by Fernando Monticelli

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