"TextMesh Pro Essential Resources are missing" error is logged after importing Essentials and closing TMP Importer opened by creating a TMP asset

Steps to reproduce:

1. Create a new project using Universal 3D template
2. Right-click in the Project window
3. Select Create > TextMeshPro > Sprite Asset
4. In the opened TMP Importer window, select "Import TMP Essentials"
5. Close the TMP Importer window once imported
6. Observe the Console

Actual results: "TextMesh Pro Essential Resources are missing, which are crucial for proper functionality." error is thrown even though the Essential Resources were successfully imported

Expected results: Essential Resources are imported with no errors

Reproducible with versions: 6000.0.69f1, 6000.3.11f1, 6000.4.0b11, 6000.5.0a8

Tested on (OS): Windows 11

Notes:

• Also reproduces with Font Assets in the 3rd step