Asset Library downloader is less usable with hidden checkboxes

[lyuma]

Tested versions

• Reproducible in 4.2 or later
• Not reproducible in 4.1 or earlier.

System information

Godot v4.3.dev (2efbc6b) - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3090 (NVIDIA; 31.0.15.3713) - Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz (16 Threads)

Issue description

Since 4.2 or later, the checkboxes in the asset library import dialog were removed by default.
There is a non-obvious arrow button which opens a second panel with the same files having checkboxes.

This creates a lot of visual noise and makes it more difficult to figure out which files to add.

Here is how it used to look in 4.1.x and earlier:

The UI here is short and to the point. it is easy to see which assets are included.

An aside, but it's unclear to me why the scary red text was added: since the reference project always has files like "project.godot", it seems like a common and normal occurrence and not a reason to make a fuss.

Steps to reproduce

1. Pick any asset in the store, such as "vrm"
2. Click Download
3. The picker window will show up as described, with no obvious way to pick which assets to use.

Minimal reproduction project (MRP)

Editor feature: happens in all projects.

[KoBeWi]

This was added in #81620
The right side previews the installation, which can be moved to another directory, while the left side is the structure of the downloaded addon.