Fix various ghost flag issues in P_SpawnGhostMobj

Fixes MF2_OBJECTFLIP being applied to flags instead of flags2 and MF_DONTENCOREMAP being removed from the object instead of the ghost

Related: RingRacers!98 (merged)

mentioned in merge request RingRacers!98 (merged)

added 1 commit

• a2d94895 - Fix another ghost flag problem as well

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changed title from Fix MF2_OBJECTFLIP being applied to flags instead of flags2 in P_SpawnGhostMobj to Fix various ghost flag issues in P_SpawnGhostMobj

changed the description

Found another issue so might as well fix that as well.