Beta Patch 6.0.7

Another patch while we continue to work on Beta 7! This patch includes a fix to an annoying softlock in the Level Builder.
See the changelog below for details.

• Fixed the icons for the Treetops and Dawn themes in the Level Builder being swapped
  
• Fixed Character Barriers in custom levels not recognizing the level boundaries as a valid spawn location for the opposing barrier piece
  
• Fixed character barriers in custom levels that failed to find a valid spawn location after respawning causing a player movement softlock