Error indicating that Importer has not been disposed properly is logged when switching to PSD Importer type in a Focused Inspector

Steps to reproduce:

1. Open any Project with the 2D PSD Importer package installed
2. Import the attached PSD file
3. Select it in the Project Browser
4. In the Inspector click the kebab menu icon in the top right corner (⋮) and select "Properties..."
5. In the newly opened Focused Inspector switch the Importer type at the top of the Inspector from Texture to PSDImporter

Actual results: Error "The previous instance of UnityEditor.U2D.PSD.PSDImporterEditor has not been disposed correctly. Make sure you are calling base.OnDisable() in your AssetImporterEditor implementation.
UnityEditor.EditorGUI/PopupCallbackInfo:SetEnumValueDelegate (object,string[],int)" is logged

Expected results: Asset Importer is disposed properly and no Error is logged

Reproducible with versions: 9.1.1, 11.0.2, 12.0.1, 13.0.1

Tested on (OS): Windows 11