manager: fix reinstall when leave screen

manager/app/src/main/java/me/weishu/kernelsu/ui/screen/Install.kt

@@ -16,6 +16,7 @@ import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material.icons.filled.Save
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
@@ -43,15 +44,16 @@ import java.util.*
 @Destination
 fun InstallScreen(navigator: DestinationsNavigator, uri: Uri) {
 
-    var text by remember { mutableStateOf("") }
-    var showFloatAction by remember {
-        mutableStateOf(false)
-    }
+    var text by rememberSaveable { mutableStateOf("") }
+    var showFloatAction by rememberSaveable { mutableStateOf(false) }
 
     val snackBarHost = LocalSnackbarHost.current
     val scope = rememberCoroutineScope()
 
     LaunchedEffect(Unit) {
+        if (text.isNotEmpty()) {
+            return@LaunchedEffect
+        }
         withContext(Dispatchers.IO) {
             installModule(uri, onFinish = { success ->
                 if (success) {