Restore finish from SelectSiteScreen

app/src/main/java/com/hippo/ehviewer/ui/LoginActivity.kt

@@ -33,7 +33,9 @@ class LoginActivity : ComponentActivity() {
                     }
 
                     composable(SELECT_SITE_ROUTE_NAME) {
-                        SelectSiteScreen()
+                        SelectSiteScreen() {
+                            finish()
+                        }
                     }
                 }
             }

app/src/main/java/com/hippo/ehviewer/ui/compose/SelectSiteScreen.kt

@@ -37,7 +37,7 @@ import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.EhUrl
 
 @Composable
-fun SelectSiteScreen() {
+fun SelectSiteScreen(finish: () -> Unit) {
     var site by remember { mutableStateOf(EhApplication.ehCookieStore.hasSignedIn()) } // false for e, true for ex
 
     Column(
@@ -112,7 +112,7 @@ fun SelectSiteScreen() {
                     Settings.putGallerySite(EhUrl.SITE_E)
                 else
                     Settings.putGallerySite(EhUrl.SITE_EX)
-                // finish activity
+                finish()
             }, Modifier.fillMaxWidth()) {
                 Text(text = stringResource(id = android.R.string.ok))
             }