### Godot version

v4.1.1.stable.official [bd6af8e0e]

### System information

Godot v4.1.1.stable - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1080 Ti (NVIDIA; 31.0.15.3667) - AMD Ryzen 9 7900X 12-Core Processor (24 Threads)

### Issue description

This [addon](https://godotengine.org/asset-library/asset/1989) is shown as empty when downloaded via the editor. If downloading from the website everything works fine and there is content in the zip file.
![image](https://github.com/godotengine/godot/assets/10883690/259f114a-6ac0-4dd2-b71f-75c35d91ba85)

The asset uses `Custom` as repository host, linking with URL to `https://github.com/kenyoni-software/godot-addons/releases/download/hide_private_properties-1.0.1/hide_private_properties-1_0_1.zip`

### Steps to reproduce

Go to the Asset Lib and download [Hide Private Properties](https://godotengine.org/asset-library/asset/1989).

### Minimal reproduction project

N/A
request->set_use_threads(EDITOR_DEF("asset_library/use_threads", true));
	const String proxy_host = EDITOR_GET("network/http_proxy/host");
	const int proxy_port = EDITOR_GET("network/http_proxy/port");
	request->set_http_proxy(proxy_host, proxy_port);
	request->set_https_proxy(proxy_host, proxy_port);
}
void EditorAssetLibraryItem::configure(const String &p_title, int p_asset_id, const String &p_category, int p_category_id, const String &p_author, int p_author_id, const String &p_cost) {
	title->set_text(p_title);
	asset_id = p_asset_id;
	category->set_text(p_category);
	category_id = p_category_id;
	author->set_text(p_author);
	author_id = p_author_id;
	price->set_text(p_cost);
}
void EditorAssetLibraryItem::set_image(int p_type, int p_index, const Ref<Texture2D> &p_image) {