The "Hold On" dialog box persists when entering the Play Mode

Unity: Editor Progress Bar Window

6.0.X

6000.0.7f1 onwards

2022.3.X

2021.3.X

The window should now close correctly when progress for the current item is complete.

Reverting due to regression

Port is not needed as the original PR was never finished for 2021.3.

How to reproduce:
1. Create and open a new project
2. Enter Play Mode
3. Observe the Editor

Expected results: The Play Mode launches
Actual results: The Play Mode does not launch

Reproducible in: 6000.0.7f1, 6000.0.8f1
Not reproducible in: 2021.3.40f1, 2022.3.35f1, 6000.0.6f1

Reproduced on: Windows 11 Pro (23H2)
Not reproduced on: MacOS 14.4.1 (M2), No other environment tested

Workaround: Hover the mouse over the loading box

Note: This issue is reproducible around 50% of the time