Recategorize a few items in the component preview (#35681)

Release Notes:

- N/A

crates/ai_onboarding/src/ai_onboarding.rs

@@ -368,7 +368,15 @@ impl RenderOnce for ZedAiOnboarding {
 
 impl Component for ZedAiOnboarding {
     fn scope() -> ComponentScope {
-        ComponentScope::Agent
+        ComponentScope::Onboarding
+    }
+
+    fn name() -> &'static str {
+        "Agent Panel Banners"
+    }
+
+    fn sort_name() -> &'static str {
+        "Agent Panel Banners"
     }
 
     fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {

crates/ai_onboarding/src/ai_upsell_card.rs

@@ -236,7 +236,7 @@ impl RenderOnce for AiUpsellCard {
 
 impl Component for AiUpsellCard {
     fn scope() -> ComponentScope {
-        ComponentScope::Agent
+        ComponentScope::Onboarding
     }
 
     fn name() -> &'static str {