Add derive Default to Disabled (#18275)

# Objective

- `#[require(Disabled)]` doesn't work as you'd expect

## Solution

- `#[derive(Default)]`

crates/bevy_ecs/src/entity_disabling.rs

@@ -92,7 +92,7 @@ use {crate::reflect::ReflectComponent, bevy_reflect::Reflect};
 /// See [the module docs] for more info.
 ///
 /// [the module docs]: crate::entity_disabling
-#[derive(Component, Clone, Debug)]
+#[derive(Component, Clone, Debug, Default)]
 #[cfg_attr(
     feature = "bevy_reflect",
     derive(Reflect),