[4.0] Drag and drop from Windows Explorer no longer works in Alpha 2

[Rinocrosser]

Godot version

4.0 alpha 2

System information

Windows 10

Issue description

Recently I've reported issue about drag and drop into Godot 4 file browser #57755
In Godot 4 alpha 2 drag and drop isn't working at all.

Steps to reproduce

Open new project,
Open Windows file explorer
Try to drag and drop a file into Godot file browser

Minimal reproduction project

No response

[Calinou]

Related to #50720. It's possible that #54645 caused a regression.

If you can compile the engine from source, you could look into bisecting the regression to greatly speed up troubleshooting.

[jmb462]

Bisect result : First bad commit : f4ea9cd

[bruvzg]

This seems to be causes by panel->set_transient(true); added for tooltips, the issue is not Windows specific and also reproducible on macOS, and this change is required to make tooltips work in fullscreen mode both on macOS and Windows. No, I was wrong, seems like filesystem dock is not always updating after a drop, but that's another issue.