Fix: Move System Message and Database button to the top

Author: google-labs-jules[bot]

app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningScreen.kt

@@ -304,7 +304,6 @@ fun PhotoReasoningScreen(
 
     Column(
         modifier = Modifier.padding(all = 16.dp).fillMaxHeight(),
-        verticalArrangement = Arrangement.Top
     ) {
         Card(
             modifier = Modifier.fillMaxWidth().padding(bottom = 16.dp),