fix origin weirdness

[embeddedt]

Reverts #790 (which breaks things, and is insanely complicated) and fixes the issue properly, based on how vanilla 1.7.10 did it. d412bee is the diff against original Angelica prior to #790.

[embeddedt]

To avoid a regression again, someone should test this in the full pack (or any moderately complex 1.7.10 pack) prior to merging.

[nshepperd]

I tried this out on creative and on our server. Everything looks fine in normal usage, though it made some cool-looking abstract art when i tried testing it in the way suggested in #790.

specifically:

• at the origin (in personal dimension), everything looks normal
• when i teleported to far away coordinates, everything looks normal
• upon teleporting back, things look normal for a second or two then turns into abstract art
• it's fixable by resetting the renderer (F3+T)

I don't think this is actually a problem/regression, because it's no worse than what happens without the far lands fixes. It doesn't happen when teleporting around shorter distances (1000s of blocks). And everything looks fine on our server.

[nshepperd]

Testing it again, basically the same issue (upon teleporting back to coordinates near the origin) occurs without the fix from this PR, so I think it's an unrelated bug.