### 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)

String str;
			int exitcode = 0;
			Error err = OS::get_singleton()->execute("xcrun", args, &str, &exitcode, true);
			if (err != OK) {
				add_message(EXPORT_MESSAGE_WARNING, TTR("Notarization"), TTR("Could not start xcrun executable."));
				return err;
			
			int rq_offset = str.find("id:");
			if (exitcode != 0 || rq_offset == -1) {
				print_line("notarytool (" + p_path + "):\n" + str);
				add_message(EXPORT_MESSAGE_WARNING, TTR("Notarization"), TTR("Notarization failed, see editor log for details."));
				return Error::FAILED;
			 else {
				bose("notarytool (" + p_path + "):\n" + str);
				int next_nl = str.find("\n", rq_offset);
				String request_uuid = (next_nl == -1) ? str.substr(rq_offset + 4, -1) : str.substr(rq_offset + 4, next_nl - rq_offset - 4);
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), vformat(TTR("Notarization request UUID: \"%s\""), request_uuid));
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), TTR("The notarization process generally takes less than an hour."));
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), "\t" + TTR("You can check progress manually by opening a Terminal and running the following command:"));
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), "\t\t\"xcrun notarytool log <request uuid> --issuer <api uuid> --key-id <api key id> --key <api key path>\" or");
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), "\t\t\"xcrun notarytool log <request uuid> --apple-id <your email> --password <app-specific pwd>>\"");
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), "\t" + TTR("Run the following command to staple the notarization ticket to the exported application (optional):"));
				add_message(EXPORT_MESSAGE_INFO, TTR("Notarization"), "\t\t\"xcrun stapler staple <app path>\"");
			
		 break;
#endif
		default: {
		;