Fix: Correct structure in PhotoReasoningScreen to resolve compilation error

This commit fixes a compilation error ("Expecting a top level declaration")
that occurred after a previous modification to the Send button logic.

The error was caused by a `LazyRow` for displaying selected images being
mistakenly placed outside its parent `Card` element due to a brace
misplacement. This commit moves the `LazyRow` back into the correct
`Card` and ensures all braces for `Row`, `Card`, main `Column`, and
the `PhotoReasoningScreen` function are balanced.

The original Send button logic changes (related to accessibility and
text input state) from the previous commit are maintained.

Author: google-labs-jules[bot]

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

@@ -383,11 +383,11 @@ fun PhotoReasoningScreen(
                                 tint = if ((isAccessibilityServiceEnabled && userQuestion.isNotBlank()) || !isAccessibilityServiceEnabled) MaterialTheme.colorScheme.primary else Color.Gray,
                             )
                         }
+                    } // Closes Row
+                    LazyRow(modifier = Modifier.padding(all = 8.dp)) {
+                        items(imageUris) { uri -> AsyncImage(uri, null, Modifier.padding(4.dp).requiredSize(72.dp)) }
                     }
-                }
-                LazyRow(modifier = Modifier.padding(all = 8.dp)) {
-                    items(imageUris) { uri -> AsyncImage(uri, null, Modifier.padding(4.dp).requiredSize(72.dp)) }
-                }
+                } // Closes Card
             }
         }