Center `CurcularProgressIndicator` in `LoadingScreen` (#7032)

* Center `CurcularProgressIndicator` in `LoadingScreen`

* Fix Import and move modifier to top

app/src/main/java/eu/kanade/presentation/components/LoadingScreen.kt

@@ -5,12 +5,16 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.size
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 
 @Composable
 fun LoadingScreen() {
-    Box(modifier = Modifier.fillMaxSize()) {
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center,
+    ) {
         CircularProgressIndicator(modifier = Modifier.size(64.dp))
     }
 }