### 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)

if (dist_type != 2) {
		if (notary_tool > 0) {
			if (notary_tool == 2 || notary_tool == 3) {
				if (!FileAccess::exists("/usr/bin/xcrun") && !FileAccess::exists("/bin/xcrun")) {
					err += TTR("Notarization: Xcode command line tools are not installed.") + "\n";
					valid = false;
				
			 else if (notary_tool == 1) {
				String rcodesign = EDITOR_GET("export/macos/rcodesign").operator String();
				if (rcodesign.is_empty()) {
					err += TTR("Notarization: rcodesign path is not set. Configure rcodesign path in the Editor Settings (Export > macOS > rcodesign).") + "\n";
					valid = false;
				
			
		 else {
			err += TTR("Warning: Notarization is disabled. The exported project will be blocked by Gatekeeper if it's downloaded from an unknown source.") + "\n";
			if (codesign_tool == 0) {
				err += TTR("Code signing is disabled. The exported project will not run on Macs with enabled Gatekeeper and Apple Silicon powered Macs.") + "\n";
			
		
	
	if (codesign_tool > 0) {
		if (ad_hoc) {
			err += TTR("Code signing: Using ad-hoc signature. The exported project will be blocked by Gatekeeper") + "\n";
		
		if (codesign_tool == 3) {
			if (!FileAccess::exists("/usr/bin/codesign") && !FileAccess::exists("/bin/codesign")) {
				err += TTR("Code signing: Xcode command line tools are not installed.") + "\n";