fix: ref_as_ptr warnings

I chose to ignore the lint in `bevy_mikktspace`, since it needs a refactor and I'd rather not touch it.

crates/bevy_mikktspace/src/lib.rs

@@ -2,7 +2,8 @@
     unsafe_op_in_unsafe_fn,
     clippy::all,
     clippy::undocumented_unsafe_blocks,
-    clippy::ptr_cast_constness
+    clippy::ptr_cast_constness,
+    clippy::ref_as_ptr
 )]
 // FIXME(3492): remove once docs are ready
 #![allow(missing_docs)]

crates/bevy_render/src/mesh/mod.rs

@@ -80,6 +80,8 @@ impl Eq for MeshVertexBufferLayoutRef {}
 
 impl Hash for MeshVertexBufferLayoutRef {
     fn hash<H: Hasher>(&self, state: &mut H) {
-        (&*self.0 as *const MeshVertexBufferLayout as usize).hash(state);
+        // Hash the address of the underlying data, so two layouts that share the same
+        // `MeshVertexBufferLayout` will have the same hash.
+        (Arc::as_ptr(&self.0) as usize).hash(state);
     }
 }