Core/Handlers: Handle CMSG_REQUEST_PET_INFO - this fixes when you /reload and the pet bar disappears

Artamedesrequested to merge
RealArtamedes/TrinityCore_434:pet-reload-fix into 4.3.4

Changes proposed:

  • Handle the packet CMSG_REQUEST_PET_INFO - this fixes when you /reload and the pet bar disappears
  • Move to PetHandler.cpp

Issues addressed: Fixes #

Tests performed: (Does it build, tested in-game, etc) Builds and tested ingame Known issues and TODO list:

  • Currently in TrinityCore_434 you do not need the control pet spells to see your pet bar, however this is a separate issue, this PR just fixes when you do a /reload and your pet control bar disappears
  • [ ]

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