'EditorSceneManager.sceneCount' reports the wrong count when called by an 'EditorSceneManager.sceneClosed' event

How to reproduce:

1. Open the “SceneCountBug.zip“ project
2. Open the “SampleScene“ and observe the Console
3. Open the “SampleSceneExtra“
4. Observe the Console

Actual result: “Scene Closed: 2” is logged
Expected result: “Scene Closed: 1” is logged

Reproducible in: 2023.1.0a1, 6000.0.65f1, 6000.3.3f1, 6000.4.0b3, 6000.5.0a4

Reproduced on: Windows 11 Pro (25H2)
Not reproduced on: No other environment tested

Notes:

• This also happens when an additively added scene is removed
• EditorSceneManager.sceneClosed event should be called after changing scenes. Therefore, the sceneCount should always return “1“