### Godot version

4.1.dev (dc625bcbfc5b587ba8867481ee7a1f6a567c25d0)

### System information

Mageia 9, Linux

### Issue description

When importing a project in current `master`, the following error is raised for each asset that gets imported:
```
Attempting to parent and popup a dialog that already has a parent.
```

It seems to be raised once per asset, caused by the progress dialog.

CC @bruvzg

### Steps to reproduce

- Import a new project in Godot that contains importable assets, e.g. https://github.com/RPicster/godot4-demo-desert-light

### Minimal reproduction project

See above.
#include "progress_dialog.h"
#include "core/object/message_queue.h"
#include "core/os/os.h"
#include "editor/editor_interface.h"
#include "editor/editor_node.h"
#include "editor/editor_scale.h"
#include "main/main.h"
#include "servers/display_server.h"
void BackgroundProgress::_add_task(const String &p_task, const String &p_label, int p_steps) {