Fix #2277: Prevent NullReferenceException when accessing table.controller

[kellyelton]

Fixes #2277

This fix prevents the NullReferenceException that occurs when accessing when no controller is assigned to a table or group.

Changes:

• Added null checks to both and properties
• Returns instead of trying to create a from a null controller ID
• Prevents the SystemError: Object reference not set to an instance of an object

Testing:

• The fix ensures that returns gracefully when no controller is assigned
• This matches the expected behavior in the OCTGN API where unset controllers should return None

Files Modified:

• octgnFX/Octgn.JodsEngine/Scripting/PythonAPI.py
• octgnFX/Octgn.JodsEngine/Scripting/Versions/3.1.0.0.py
• octgnFX/Octgn.JodsEngine/Scripting/Versions/3.1.0.1.py
• octgnFX/Octgn.JodsEngine/Scripting/Versions/3.1.0.2.py

[kellyelton]

🔧 Fixed issue #2277: Prevent NullReferenceException when accessing table.controller

PR: #2335
Issue: #2277 - Calling table.controller throws NullReferenceException

Fix: Added null checks to Card.controller and Group.controller properties to prevent crashes when no controller is assigned. Returns None instead of throwing SystemError.

Status: PR opened and awaiting review.