### Tested versions

Godot Engine v4.2.stable.official.46dc27791

### System information

Windows 10

### Issue description

When exporting to web, Godot fails with this error in the console:

> scene/main/window.cpp:884 - Attempting to make child window exclusive, but the parent window already has another exclusive child. This window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559/@<!-- -->VBoxContainer@<!-- -->137/@<!-- -->AcceptDialog@<!-- -->411, parent window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559, current exclusive child window: /root/@<!-- -->EditorNode@<!-- -->17120/@<!-- -->Panel@<!-- -->13/@<!-- -->ProjectExportDialog@<!-- -->559/@<!-- -->ProgressDialog@<!-- -->17444

![a](https://github.com/godotengine/godot/assets/2000051/bf9d22aa-d3fe-4e11-bff6-c387e740fe90)

This happens for newly created empty projects.


### Steps to reproduce

1. Open the attached project (or create a new project).
2. Project->Export->Export All
3. Observe the console error.  No output files are generated.


### Minimal reproduction project (MRP)

[export_test.zip](https://github.com/godotengine/godot/files/13574810/export_test.zip)

low_bits++;
		if (!low_bits) {
			mid_bits++;
			if (!mid_bits) {
				high_bits++;
			}
		}
		return *this;
	}
};
struct ExportLibsData {
	Vector<String> lib_paths;
	String dest_dir;
};
void EditorExportPlatformIOS::_add_assets_to_project(const Ref<EditorExportPreset> &p_preset, Vector<uint8_t> &p_project_data, const Vector<IOSExportAsset> &p_additional_assets) {
	
	
	PbxId current_id = { 0x58938401, 0, 0 };
	String pbx_files;
	String pbx_frameworks_build;
	String pbx_frameworks_refs;
	String pbx_resources_build;
	String pbx_resources_refs;
	String pbx_embeded_frameworks;
	const String file_info_format = String("$build_id = {isa = PBXBuildFile; fileRef = $ref_id; };\n") +
			"$ref_id = {isa = PBXFileReference; lastKnownFileType = $file_type; name = \"$name\"; path = \"$file_path\"; sourceTree = \"<group>\"; };\n";
	for (int i = 0; i < p_additional_assets.size(); ++i) {
		String additional_asset_info_format = file_info_format;
		String build_id = (++current_id).str();