♻️ Refactor: PhotologCardPreview 접근 제어자 수정

Author: chanho0908

core/design-system/src/main/java/com/twix/designsystem/components/photolog/PhotologCard.kt

@@ -50,7 +50,7 @@ fun PhotologCard(
 
 @Preview
 @Composable
-fun PhotologCardPreview() {
+private fun PhotologCardPreview() {
     TwixTheme {
         PhotologCard(
             rotation = 0f,