Allow retry when Android policy conflict refresh fails

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/components/GroupPolicyDialog.kt

@@ -64,7 +64,8 @@ fun GroupPolicyDialog(channel: String, onDismiss: () -> Unit) {
                         else -> R.string.group_policy_failed
                     }
                     if (result.optString("error") == "conflict") {
-                        snapshot = policyRequest(channel.toLong(), all, null, emptySet()); selected = emptySet()
+                        val refreshed = policyRequest(channel.toLong(), all, null, emptySet())
+                        snapshot = refreshed.takeIf { it.optBoolean("ok") }; selected = emptySet()
                     } else snapshot = null
                 } else {
                     if (snapshot == null || apply) desired = result.getBoolean("all_members")