Do not use native dialog for reset shortcuts (#6493)

# References and relevant issues
closes #6490

# Description

Since Qt6==6.5.0 on Macos, the Qt starts using native dialog even if it
does not support all buttons (in our case
`QMessageBox.StandardButton.RestoreDefaults`).

This solution is inspired by comments from
https://bugreports.qt.io/browse/QTBUG-116757

If someone has time, please try to open the Bug report there. After the
last discussions about patching enum, I do not feel fluent enough to
write in English to talk with them.

An alternative solution will be to change the button on the supported
one. Or change the native flag globally, but the second one may impact
File Dialogs.

---------

Co-authored-by: Peter Sobolewski <pete.sd@gmail.com>

napari/_qt/dialogs/preferences_dialog.py

@@ -4,6 +4,7 @@
 
 from qtpy.QtCore import QSize, Qt, Signal
 from qtpy.QtWidgets import (
+    QApplication,
     QDialog,
     QHBoxLayout,
     QListWidget,
@@ -209,12 +210,23 @@ def _get_page_dict(self, field: 'ModelField') -> Tuple[dict, dict]:
 
     def _restore_default_dialog(self):
         """Launches dialog to confirm restore settings choice."""
+        prev = QApplication.instance().testAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs
+        )
+        QApplication.instance().setAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs, True
+        )
+
         response = QMessageBox.question(
             self,
             trans._("Restore Settings"),
             trans._("Are you sure you want to restore default settings?"),
-            QMessageBox.RestoreDefaults | QMessageBox.Cancel,
-            QMessageBox.RestoreDefaults,
+            QMessageBox.StandardButton.RestoreDefaults
+            | QMessageBox.StandardButton.Cancel,
+            QMessageBox.StandardButton.RestoreDefaults,
+        )
+        QApplication.instance().setAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs, prev
         )
         if response == QMessageBox.RestoreDefaults:
             self._settings.reset()

napari/_qt/widgets/qt_keyboard_settings.py

@@ -6,6 +6,7 @@
 from qtpy.QtGui import QKeySequence
 from qtpy.QtWidgets import (
     QAbstractItemView,
+    QApplication,
     QComboBox,
     QHBoxLayout,
     QItemDelegate,
@@ -134,13 +135,22 @@ def __init__(
 
     def restore_defaults(self):
         """Launches dialog to confirm restore choice."""
-
+        prev = QApplication.instance().testAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs
+        )
+        QApplication.instance().setAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs, True
+        )
         response = QMessageBox.question(
             self,
             trans._("Restore Shortcuts"),
             trans._("Are you sure you want to restore default shortcuts?"),
-            QMessageBox.RestoreDefaults | QMessageBox.Cancel,
-            QMessageBox.RestoreDefaults,
+            QMessageBox.StandardButton.RestoreDefaults
+            | QMessageBox.StandardButton.Cancel,
+            QMessageBox.StandardButton.RestoreDefaults,
+        )
+        QApplication.instance().setAttribute(
+            Qt.ApplicationAttribute.AA_DontUseNativeDialogs, prev
         )
 
         if response == QMessageBox.RestoreDefaults: