### 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
extension_guess["svg"] = tree->get_editor_theme_icon(SNAME("ImageTexture"));
		extension_guess["tga"] = tree->get_editor_theme_icon(SNAME("ImageTexture"));
		extension_guess["webp"] = tree->get_editor_theme_icon(SNAME("ImageTexture"));
		extension_guess["wav"] = tree->get_editor_theme_icon(SNAME("AudioStreamWAV"));
		extension_guess["ogg"] = tree->get_editor_theme_icon(SNAME("AudioStreamOggVorbis"));
		extension_guess["mp3"] = tree->get_editor_theme_icon(SNAME("AudioStreamMP3"));
		extension_guess["scn"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["tscn"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["escn"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["dae"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["gltf"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["glb"] = tree->get_editor_theme_icon(SNAME("PackedScene"));
		extension_guess["gdshader"] = tree->get_editor_theme_icon(SNAME("Shader"));
		extension_guess["gdshaderinc"] = tree->get_editor_theme_icon(SNAME("TextFile"));
		extension_guess["gd"] = tree->get_editor_theme_icon(SNAME("GDScript"));
		if (Engine::get_singleton()->has_singleton("GodotSharp")) {
			extension_guess["cs"] = tree->get_editor_theme_icon(SNAME("CSharpScript"));
		} else {
			
			extension_guess["cs"] = tree->get_editor_theme_icon(SNAME("ImportFail"));
		}
		extension_guess["res"] = tree->get_editor_theme_icon(SNAME("Resource"));
		extension_guess["tres"] = tree->get_editor_theme_icon(SNAME("Resource"));
		extension_guess["atlastex"] = tree->get_editor_theme_icon(SNAME("AtlasTexture"));
		
		extension_guess["obj"] = tree->get_editor_theme_icon(SNAME("Mesh"));
		extension_guess["txt"] = tree->get_editor_theme_icon(SNAME("TextFile"));
		extension_guess["md"] = tree->get_editor_theme_icon(SNAME("TextFile"));
		extension_guess["rst"] = tree->get_editor_theme_icon(SNAME("TextFile"));
		extension_guess["json"] = tree->get_editor_theme_icon(SNAME("TextFile"));