Function use_binding 

pub fn use_binding<T: 'static>(
    explicit: Option<Binding<T>>,
    default: T,
) -> Binding<T>

Resolves a binding using explicit prop, FieldContext, then uncontrolled-state precedence.

The internal signal hook is called regardless of which source wins so the resolution order can change between renders without violating Dioxus’s hook ordering rules.