BrpQueryRow has field deserialization fix (#16613)

# Objective

BrpQueryRow doesn't serialize `has` field if it is empty. That is okay
until you try to deserialize it after. Then it will fail to deserialize
due to missing field.

## Solution

Serde support using default value when field is missing, this PR adds
that.

Author: Leinnan

crates/bevy_remote/src/builtin_methods.rs

@@ -304,7 +304,7 @@ pub struct BrpQueryRow {
     pub components: HashMap<String, Value>,
 
     /// The boolean-only containment query results.
-    #[serde(skip_serializing_if = "HashMap::is_empty")]
+    #[serde(skip_serializing_if = "HashMap::is_empty", default)]
     pub has: HashMap<String, Value>,
 }