[MCM-646] Assert when going through end portal in "Abstraction Cubes"

Partner Rank: 3

Verification builds: Beta 1.12.0.4 release 2160393

Summary:

Impact: Asserts are bad, no apparent impact on the functionality of the map though I hear Content Review is now blocking for asserts, even though they're outside of our control which is a HUGE problem.

Repro Steps:

open "Abstraction Cubes" from the marketplace
grab the ender eyes from the chest at 588 60 15
put the eyes in the ender portal nearby
go through the portal (will have to break a few stonebrick blocks to get in)
turn to look at the other end portal in the middle of the end past the pillars

Observed Results: This assert but no apparent issues as a result of it. Everything seems to be functioning correctly.

--------------------------- Assert Failure - ctrl+C to copy this message to the clipboard! --------------------------- Assertion failed: What happened to the EndGateway on the other side? Condition is false: false Function: EndDragonFight::_setEndGatewayBlockActorExitPosition in f:\darwinwork\2\s\handheld\src\common\world\level\dimension\end\enddragonfight.cpp @ 580 --------------------------- OK
---------------------------

Expected Results: Not an assert

Notes: Seems to happen inconsistently. Will happen every time on my wife's computer and another team members. Doesn't happen on mine.

Screenshots/Videos attached:

Regression builds: 1.11