SW-346 warn users not to remove laser head while the device is on reo…

…pened to Fix migration Exception (#1357)

octoprint_mrbeam/migrate.py

@@ -242,7 +242,7 @@ def run(self):
                     self.VERSION_UPDATE_FORCE_FOCUS_REMINDER,
                     equal_ok=False,
                 ):
-                    self.plugin._settings.set_boolean(["focusReminder"], True).save()
+                    self.update_focus_reminder_setting()
 
                 # migrations end
 
@@ -976,3 +976,13 @@ def update_custom_material_settings(self):
         my_materials = materials(self.plugin)
         for k, v in my_materials.get_custom_materials().items():
             my_materials.put_custom_material(k, v)
+
+    def update_focus_reminder_setting(self):
+        """
+        Updates the 'focusReminder' flag in settings
+        Enforce the flag to True so the user can see
+        the laser head removal warning at least once
+        """
+        self._logger.info("start update_focus_reminder_setting")
+        self.plugin._settings.set_boolean(["focusReminder"], True)
+        self.plugin._settings.save()