Portals - force full check on adding moving object
Moving objects being added during instance_moving_create() were incorrectly not forcing a full check to find which room they were within. This could result in moving objects being re-added not correctly identifying their current room, and thus culling incorrectly. This PR forces a full check on calling instance_moving_create.
(cherry picked from commit e7a73579e3b52e5f2afd7e6168047b3f6b85212e)