`notify-debouncer-full` / `-mini` always enable `notify` default features

[LeoniePhiline]

System details

• OS/Platform name and version: OpenSUSE Tumbleweed Linux
• Rust version (if building from source): rustc --version: 1.74.0
• Notify version (or commit hash if building from git): notify v6.1.1, notify-debouncer-full v0.3.1

What you did (as detailed as you can)

1. Create a new project.
2. Add notify without default features. crossbeam-channel is not installed (as expected).
3. Add notify-debouncer-full without default features.

What you expected

crossbeam-channel still not being installed, as default features are disabled for both notify and notify-debouncer-full.

What happened

crossbeam-channel is now installed despite the crossbeam default feature being disabled.

The reason is that notify-debouncer-full does not set default-features = false on its notify dependency.

Steps to reproduce

cargo init repro
cd repro

cargo add notify --no-default-features
cargo tree
# crossbeam-channel is not installed. Good.

cargo add notify-debouncer-full --no-default-features
cargo tree
# Unexpectedly, crossbeam-channel is now installed as dependency of `notify`.

Proposed fix

notify-debouncer-full/Cargo.toml:

 [features]
-default = ["crossbeam"]
+default = ["crossbeam","notify/macos_fsevent"]
 # can't use dep:crossbeam-channel and feature name crossbeam-channel below rust 1.60
 crossbeam = ["crossbeam-channel","notify/crossbeam-channel"]

 [dependencies]
-notify = { version = "6.1.1", path = "../notify" }
+notify = { version = "6.1.1", path = "../notify", default-features = false }

Note: The same applies to notify-debouncer-mini.