### 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)

err += "\n";
			valid = false;
		}
		
		Ref<DirAccess> build_tools_da = DirAccess::open(sdk_path.path_join("build-tools"), &errn);
		if (errn != OK) {
			err += TTR("Invalid Android SDK path in Editor Settings.");
			err += TTR("Missing 'build-tools' directory!");
			err += "\n";
			valid = false;
		}
		String target_sdk_version = p_preset->get("gradle_build/target_sdk");
		if (!target_sdk_version.is_valid_int()) {
			target_sdk_version = itos(DEFAULT_TARGET_SDK_VERSION);
		}
		
		String apksigner_path = get_apksigner_path(target_sdk_version.to_int());
		if (!FileAccess::exists(apksigner_path)) {
			err += TTR("Unable to find Android SDK build-tools' apksigner command.");
			err += TTR("Please check in the Android SDK directory specified in Editor Settings.");
			err += "\n";
			valid = false;
		}
	}
	if (!err.is_empty()) {
		r_error = err;
	}
	return valid;
}
bool EditorExportPlatformAndroid::has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const {