### Godot version

4.0.beta10 mono and standard

### System information

Windows 10 64bits

### Issue description

When exporting a project, Godot fails to bundle the required DLLs from the GDExtension to the export folder:

```
editor/export/editor_export_plugin.h:123 - Required virtual method EditorExportPlugin::_get_name must be overridden before calling.
  No suitable library found for GDExtension: res://webrtc/webrtc.gdextension. Possible feature flags for your platform: pc, s3tc, windows, x86_64, template, template_debug
```

### Steps to reproduce

Export for Windows with the existing configuration: WebRTC DLLs won't be copied in the export folder

### Minimal reproduction project

[Repro.zip](https://github.com/godotengine/godot/files/10368987/Repro.zip)

md5 += FileAccess::get_md5(p_path + ".import");
			}
			if (fec.source_md5 == md5) {
				
				fec.source_modified_time = mod_time;
				fec.used = true;
				return fec.saved_path.is_empty() ? p_path : fec.saved_path;
			}
		}
	}
	FileExportCache fec;
	fec.used = true;
	fec.source_modified_time = FileAccess::get_modified_time(p_path);
	String md5 = FileAccess::get_md5(p_path);
	if (FileAccess::exists(p_path + ".import")) {
		
		md5 += FileAccess::get_md5(p_path + ".import");
	}
	fec.source_md5 = md5;
	
	String type = ResourceLoader::get_resource_type(p_path);
	bool modified = false;
	String save_path;
	if (type == "PackedScene") { 
		Ref<PackedScene> ps = ResourceLoader::load(p_path, "PackedScene", ResourceFormatLoader::CACHE_MODE_IGNORE);
		ERR_FAIL_COND_V(ps.is_null(), p_path);
		Node *node = ps->instantiate(PackedScene::GEN_EDIT_STATE_INSTANCE); 
		ERR_FAIL_COND_V(node == nullptr, p_path);
		if (customize_scenes_plugins.size()) {