ToolStripDropDown top scroll button cannot scroll to the visible item before a hidden item

### .NET version

.NET 11 SDK build: 11.0.100-preview.5.26256.117

### Did it work in .NET Framework?

No

### Did it work in any of the earlier releases of .NET Core or .NET 5+?

No, repro in previous .NET versions

### Issue description

ToolStripDropDown scrolling behavior issue when hidden items exist in the dropdown.
Given four dropdown items:

- A
- B
- C
- D

with: `B.Visible = false;`

At runtime, the dropdown can scroll downward correctly, but upward scrolling using the top scroll button stops at` C` and cannot continue scrolling back to `A`, which is the visible item immediately before the hidden item` B`.

https://github.com/user-attachments/assets/29eca076-274a-4d00-8c2d-8f0e417981b9

### Steps to reproduce

1. Create a ToolStripDropDownButton (or similar dropdown control).
2. Add four dropdown items:

- A
- B
- C
- D

3. Set: `B.Visible = false;`
4. Configure the dropdown height so scrolling buttons appear.
5. Run the application.
6. Scroll downward until lower items are visible.
7. Use the top scroll button to scroll upward.