Added deref trait for Mesh2dHandle (#13002)

# Added deref trait for Mesh2dHandle

- Fixes #13001 ".

## Solution

- Added Derive Deref for Mesh2dHandle.

Author: zuiyu1998

crates/bevy_sprite/src/mesh2d/mesh.rs

@@ -39,7 +39,7 @@ use crate::Material2dBindGroupId;
 /// Component for rendering with meshes in the 2d pipeline, usually with a [2d material](crate::Material2d) such as [`ColorMaterial`](crate::ColorMaterial).
 ///
 /// It wraps a [`Handle<Mesh>`] to differentiate from the 3d pipelines which use the handles directly as components
-#[derive(Default, Clone, Component, Debug, Reflect, PartialEq, Eq)]
+#[derive(Default, Clone, Component, Debug, Reflect, PartialEq, Eq, Deref, DerefMut)]
 #[reflect(Default, Component)]
 pub struct Mesh2dHandle(pub Handle<Mesh>);