Add MiuixPopupHost to SuRequestActivity for dropdown rendering

SuperDropdown requires MiuixPopupHost in the Compose tree to render
its popup list. Without it the timeout selector was hidden behind the
dialog card or invisible outside the app.

Made-with: Cursor

app/apk/src/main/java/com/topjohnwu/magisk/ui/surequest/SuRequestActivity.kt

@@ -5,10 +5,12 @@ import android.content.pm.ActivityInfo
 import android.content.res.Resources
 import android.os.Build
 import android.os.Bundle
-import android.view.View
 import android.view.Window
 import android.view.WindowManager
 import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.ui.Modifier
 import androidx.lifecycle.lifecycleScope
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.arch.UIActivity
@@ -21,14 +23,12 @@ import com.topjohnwu.magisk.ui.theme.Theme
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import top.yukonga.miuix.kmp.utils.MiuixPopupUtils.Companion.MiuixPopupHost
 
 open class SuRequestActivity : UIActivity(), UntrackedActivity {
 
     override val viewModel: SuRequestViewModel by viewModel()
 
-    override val snackbarView: View
-        get() = window.decorView.findViewById(android.R.id.content)
-
     override fun onCreate(savedInstanceState: Bundle?) {
         supportRequestWindowFeature(Window.FEATURE_NO_TITLE)
         requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LOCKED
@@ -63,7 +63,10 @@ open class SuRequestActivity : UIActivity(), UntrackedActivity {
 
         setContent {
             MagiskTheme {
-                SuRequestScreen(viewModel = viewModel)
+                Box(modifier = Modifier.fillMaxSize()) {
+                    SuRequestScreen(viewModel = viewModel)
+                    MiuixPopupHost()
+                }
             }
         }
     }