Revert "Replace deserialize_any with deserialize_map"

This reverts commit 4122568.

crates/bevy_reflect/src/serde/de.rs

@@ -56,7 +56,7 @@ impl<'a, 'de> DeserializeSeed<'de> for UntypedReflectDeserializer<'a> {
     where
         D: serde::Deserializer<'de>,
     {
-        deserializer.deserialize_map(UntypedReflectDeserializerVisitor {
+        deserializer.deserialize_any(UntypedReflectDeserializerVisitor {
             registry: self.registry,
         })
     }