`current_function` doesn't work in single function overview view

[CouleeApps]

Version and Platform (required):

• Binary Ninja Version: 5.3.9252-dev
• Edition: Ultimate
• OS: macOS
• OS Version: 26.4
• CPU Architecture: M4

Bug Description:
When using Linear View's Single Function View mode, and using View Data/overview (all the functions are collapsed), clicking a function header does not set current_function in the python console despite me having clicked in a function.

Steps To Reproduce:

1. Open any file
2. Linear view
3. Enable Single Function View mode
4. Click the View Data button in the toolbar
5. Click a function's name
6. Python: current_function
7. Observe None

Expected Behavior:
I expected the function I clicked to be reflected in current_function

Screenshots/Video Recording: