Revert "fix avatar rotation when sitting on a linked part"

Reverting for now to place on separate branch

This reverts commit 65304260af283211443a2872c46f6609d3e45649.
Revert "Refix fix for sitting on non-root linked prims with explicit sit targets."

This reverts commit 78649eb0999a5f97cc541c94ec98d1d06ed957cb.
Revert "Fix non-root prim sit positions for prims where a sit target has been specified as well."

Revert to place on separate branch for now

This reverts commit 70e651a8d1d0c2a48c4f26cd1c70bee098c11a57.
Revert "Still send CameraEyeOffset in UDP SendSitReponse even if at offset is Vector3.Zero"

This reverts commit 9bdd3dc7de46507b490a2eae5160123a28133d63.
Revert "Add line accidentally left out of recent non-root prim sit fix"

Reverting to place on new branch

This reverts commit ed1029712a85206430fee1d4897d473517728dab.
Revert "Fix issue where sitting on non-root linked prims would send camera to wrong position in third-person and mouselook"

Reverting to place on separate branch

This reverts commit ff4e7de7769b7eaa1b4fd3917e59f362b708226a.