Root folder color can be changed if selected in a particular order

[alessand10]

Tested versions

Tested in v4.4.dev.custom_build [aa8d9b8]

System information

Godot v4.4.dev (aa8d9b8) - Windows 10.0.22631 - Multi-window, 1 monitor - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 (NVIDIA; 32.0.15.6094) - 12th Gen Intel(R) Core(TM) i7-12700KF (20 threads)

Issue description

It appears that the file/folder multi-selection logic is not working correctly. When I select multiple folders (including the root folder), then depending on the order of selection, I can either set the root folder's color or I can't. From inspecting the file system logic, it appears that I should not be able to change the root folder's color regardless of selection order.

Menu when root is not the first folder selected:

Menu when root is the first folder selected:

This issue appears related to #99932

Steps to reproduce

1. Open any project and create a folder under the root folder in the file system.
2. Select the root folder then multi-select your created sub folder (you should not see an option to set the file color in the menu after right clicking)
3. Select only the sub folder then multi-select your root folder (you should see an to set the file color in the menu after right clicking)

Minimal reproduction project (MRP)

broken_filesystem.zip