### 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)

while (ret.size() % 4) {
		ret.push_back(0);
	}
	encode_uint32(ret.size(), &ret.write[4]); 
	encode_uint32(new_stable_end - 8, &ret.write[12]); 
	encode_uint32(string_table.size(), &ret.write[16]); 
	encode_uint32(string_data_offset - 8, &ret.write[28]); 
	p_manifest = ret;
}
String EditorExportPlatformAndroid::_parse_string(const uint8_t *p_bytes, bool p_utf8) {
	uint32_t offset = 0;
	uint32_t len = 0;
	if (p_utf8) {
		uint8_t byte = p_bytes[offset];
		if (byte & 0x80) {
			offset += 2;
		} else {
			offset += 1;
		}
		byte = p_bytes[offset];
		offset++;
		if (byte & 0x80) {
			len = byte & 0x7F;
			len = (len << 8) + p_bytes[offset];
			offset++;
		} else {
			len = byte;
		}
	} else {
		len = decode_uint16(&p_bytes[offset]);