Add #[serde(deny_unknown_fields)] to action structs that didn't have it (#33679)

Release Notes:

- N/A

crates/workspace/src/workspace.rs

@@ -288,6 +288,7 @@ actions!(
 
 #[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
 #[action(namespace = file_finder, name = "Toggle")]
+#[serde(deny_unknown_fields)]
 pub struct ToggleFileFinder {
     #[serde(default)]
     pub separate_history: bool,