Editor Plugins not removed when Folding an ancestor Resource

[SaracenOne]

Tested versions

78c9f8d

System information

Windows 11

Issue description

Possibly related to #103615, but I have been unable to reproduce the crash to know for sure.

This is a minor bug in the inspector a resource property, which had corresponding editor plugins associated with a descendent properties, does not cleanup editor plugins from the list if the ancestor property was folded. This is because the code associated with removing a plugin from the active list is only called if the exact property with an associated plugin which handles the type is deselected. If, however, an EditorPropertyResource which contains a property handled by an plugin is closed while the property handled by a plugin is open, it will not be removed from the active list and the editor will show a warning that it tried to add the plugin to the list twice while it is already open.

godot.windows.editor.dev.x86_64_MXzoxGNoaF.mp4

Steps to reproduce

• Create a MeshInstance.
• Assign it a ShaderMaterial.
• Assign the ShaderMaterial a Shader.
• Open the Shader property as shown in the video.
• Click on the ShaderMaterial property. to close it.
• Click on it again to reopen it and note the error.

Minimal reproduction project (MRP)

N/A

[Rindbee]

It seems to be a variant of #103909. Specifically the crash case. It may be the case where two sub-resources of the same type are opened.