### 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)

if (f.is_null()) {
			DirAccess::remove_file_or_error(tmppath);
			add_message(EXPORT_MESSAGE_ERROR, TTR("Save PCK"), vformat(TTR("Can't open file to read from path \"%s\"."), tmppath));
			return ERR_CANT_CREATE;
		}
	} else {
		
		f = FileAccess::open(p_path, FileAccess::READ_WRITE);
		if (f.is_null()) {
			DirAccess::remove_file_or_error(tmppath);
			add_message(EXPORT_MESSAGE_ERROR, TTR("Save PCK"), vformat(TTR("Can't open executable file from path \"%s\"."), tmppath));
			return ERR_FILE_CANT_OPEN;
		}
		f->seek_end();
		embed_pos = f->get_position();
		if (r_embedded_start) {
			*r_embedded_start = embed_pos;
		}
		
		int pad = f->get_position() % 8;
		for (int i = 0; i < pad; i++) {
			f->store_8(0);
		}
	}
	int64_t pck_start_pos = f->get_position();
	f->store_32(PACK_HEADER_MAGIC);
	f->store_32(PACK_FORMAT_VERSION);
	f->store_32(VERSION_MAJOR);
	f->store_32(VERSION_MINOR);
	f->store_32(VERSION_PATCH);