### 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)

return p_export_format == EXPORT_FORMAT_AAB ? AAB_ASSETS_DIRECTORY : APK_ASSETS_DIRECTORY;
}
bool EditorExportPlatformAndroid::is_package_name_valid(const String &p_package, String *r_error) const {
	String pname = get_package_name(p_package);
	if (pname.length() == 0) {
		if (r_error) {
			*r_error = TTR("Package name is missing.");
		}
		return false;
	}
	int segments = 0;
	bool first = true;
	for (int i = 0; i < pname.length(); i++) {
		char32_t c = pname[i];
		if (first && c == '.') {
			if (r_error) {
				*r_error = TTR("Package segments must be of non-zero length.");
			}
			return false;
		}
		if (c == '.') {
			segments++;
			first = true;
			continue;
		}
		if (!is_ascii_identifier_char(c)) {
			if (r_error) {
				*r_error = vformat(TTR("The character '%s' is not allowed in Android application package names."), String::chr(c));
			}
			return false;