zeta: Rename data_collection_permission back to can_collect_data (#24225)

This PR renames some bindings from `data_collection_permission` back to
`can_collect_data`, as the latter name is clearer on account of being a
modal verb.

Release Notes:

- N/A

crates/rpc/src/llm.rs

@@ -41,7 +41,7 @@ pub struct PredictEditsParams {
     pub input_excerpt: String,
     /// Whether the user provided consent for sampling this interaction.
     #[serde(default)]
-    pub data_collection_permission: bool,
+    pub can_collect_data: bool,
 }
 
 #[derive(Debug, Serialize, Deserialize)]