Fold button does nothing on empty function

[marcospb19]

Summary

Fold button does nothing on empty scope

Steps to trigger the problem:

1. Open buffer
2. Set language to 'Rust'
3. Paste contents

fn main() {
    
}

4. Try clicking on the button

a.mp4

Actual Behavior:

Does nothing.

Expected Behavior:

Either hide the button, or do something when I click it.

Zed Version and System Specs

Zed: v0.177.0 (Zed Nightly e8ef36e)
OS: Linux X11 arch unknown
Memory: 60.3 GiB
Architecture: x86_64
GPU: AMD Radeon RX 6750 XT (RADV NAVI22) || radv || Mesa 24.3.4-arch1.1