Fix full sync dialog failing to appear

The changed timing in 7784321b90 caused
the question dialog to use the progress window as the parent, which
meant it got closed when the progress window closes moments afterwards.

https://forums.ankiweb.net/t/anki-24-04-beta-rc/41792/69

qt/aqt/progress.py

@@ -206,7 +206,7 @@ class ProgressManager:
         maybeShow: bool = True,
         max: int | None = None,
     ) -> None:
-        # print self._min, self._counter, self._max, label, time.monotonic() - self._lastTime
+        # print("update", label, self._levels, self._min, self._counter, self._max, label, time.monotonic() - self._shown)
         if not self.mw.inMainThread():
             print("progress.update() called on wrong thread")
             return

qt/aqt/sync.py

@@ -161,6 +161,7 @@ def full_sync(
             callback=callback,
             buttons=button_labels,
             default_button=2,
+            parent=mw,
         )
 
 

qt/aqt/utils.py

@@ -208,6 +208,7 @@ def ask_user_dialog(
         | None
     ) = None,
     default_button: int = 1,
+    parent: QWidget | None = None,
     **kwargs: Any,
 ) -> MessageBox:
     "Shows a question to the user, passes the index of the button clicked to the callback."
@@ -219,6 +220,7 @@ def ask_user_dialog(
         icon=QMessageBox.Icon.Question,
         buttons=buttons,
         default_button=default_button,
+        parent=parent,
         **kwargs,
     )