[Lua] Fix Banishing Gate messaging, timing, and trigger areas

[TracentEden2]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

This PR fixes three issues with the Banishing Gates in GC.

1. The PR changes the opening and closing messages for each gate to be zone wide (so seen by every player in the zone) as on retail.
2. The PR changes the timing of the gates so the first gate is open for 30 seconds, second gate for 45 seconds, and third gate for 60 seconds as on retail.
3. The PR fixes some small positioning errors with the trigger areas thus making pressing the levers easier and similar to retail.

The basic logic is from KnowOne (on Eden) and the logic was validated by him on retail. I adapted his code to work on LSB.

Draft still as might make one more small change from KnowOne

Steps to test these changes

Go to the Banishing Gates and open with one player while having another player in the zone. Notice the messages are zone wide and the timings vary for different gates.