teleport to region in zoning UI

[PeenScreeker]

This pull request implements teleport functionality to the zoning UI. By double clicking a zone in the tracklist, the player can teleport to the first region of the selected zone.

This functionality could be improved to select the particular region of multi-region volumes.

Depends on red changes (teleport method on ZoneMenu panel).

Checks

• I have thoroughly tested all of the code I have modified/added/removed to ensure something else did not break
• I have followed semantic commit messages e.g. feat: Add foo, chore: Update bar, etc...
• My branch has a clear history of changes that can be easy to follow when being reviewed commit-by-commit
• My branch is functionally complete; the only changes to be done will be those potentially requested in code review
• All changes requested in review have been fixuped into my original commits.
• Fully tokenized all my strings (no hardcoded English strings!!) and supplied bulk JSON strings below

[PeenScreeker]

@tsa96 made some changes that are worth reviewing again. Specifically, fixed a bug in the teleport section of region details

[tsa96]

Yeah, looks okay. Unsure whether delete or = undefined is best from a javascript-POV here, and if C++ needs the = undefined that's totally fine.

[PeenScreeker]

I changed it thinking that was the problem, but it wasn't. Should have changed it back to delete. Fixed now, thanks for taking a look!