The extra line appeared for the toolStripTextBox item for MenuStrip/ToolStrip contorl with set VisualStylesMode as NET11

[Zheng-Li01]

.NET version

11.0.0-preview.7.26365.114 + private dlls built from Net11/Integration-2 branch of https://github.com/KlausLoeffelmann/winforms repo

Did it work in .NET Framework?

Not tested/verified

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

This is new API introduced by #14746

Issue description

The extra line appeared for the toolStripTextBox item for MenuStrip/ToolStrip contorl with set VisualStylesMode as NET11

Steps to reproduce

1. Create a .NET winforms project
2. Set the VisualStylesMode as NET11 for the form1
3. Add ToolStrip or MenuStrip control on the form1.cs[Design]
4. Add the toolStripTextBox item for the toolStrip1/MenuStrip1