(Probably linux only) Crash when losing focus with "Save when focus is lost" option activated

[Louis-Simon22]

Godot version

4.0.2.stable

System information

Ubuntu 22.10

Issue description

The "Save when focus is lost" option makes the engine crash on my system.

Here's the error

ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.
   at: add_task (editor/progress_dialog.cpp:177)
ERROR: Task 'save' already exists.

Steps to reproduce

1. Create a new project
2. Creat a scene (so there's something to save)
3. Activate the "Save when focus is lost" setting in the Editor settings
4. Alt-tab to some other application
   Engine crashes at this point

Minimal reproduction project

N/A

[Rindbee]

It is a duplicate of #73765.

[Calinou]

• Duplicate of "Parent node is busy setting up children" on focus loss when save_on_focus_loss option is enabled #73765.