Fix ChatTypingPanel and ChatActionLabel notifications not displaying Take 2

[Baaaaaz]

Requirements for Contributing a Bug Fix or Enhancement

fixes #6006
properly fixes #5907

Description of the Change

1. Undoes changes made in Fix ChatTypingPanel and ChatActionLabel notifications not displaying #5999 for issue [Bug]: Typing Notifications not displaying properly. #5907.
2. zoneRenderPanel is now always added at the back.
3. Resurrects the chat action label (no one seemed to miss it however as it has been gone for a while and no-one complained about it!). Chat action label is now added above overlays (so it remains clickable if overlays are visible)
4. If the chat action label is visible in full screen mode (where chat is not visible anyway), when exiting full screen it now checks if the chat window (the command panel) is already open and if so hide the chat action label.

Layer Order is now:

1. PointerToolOverlay (TOP)
2. JLabel (chat action)
3. HTMLOverlayPanel
4. ChatTypingNotification
5. ZoneRenderer (BOTTOM)

Possible Drawbacks

Minor - clicking the chat action label when in full screen mode will open the chat window (if not already open) on exiting full screen mode.

Documentation Notes

n/a

Release Notes

• Fixed an issue where chat notifications were not being displayed.

---

This change is