Meal entry in meal plan without section cause error

[AlesZurek]

Describe the bug
Mealplan with default (empty) section cause breaking loading of grocy integration
Exact error message is
Logger: custom_components.grocy.coordinator
Source: helpers/update_coordinator.py:229
Error fetching grocy data: Update failed: 1 validation error for MealPlanSectionResponse name none is not an allowed value (type=type_error.none.not_allowed)

Current workaround is to add "dummy" section and set it up for every meal added but if you forget whole integration will stop working.

Expected behavior
Meal in meaplan without section (empty section) will be loaded and will not break loading of grocy integration.

To Reproduce
Steps to reproduce the behavior:

1. Go to Grocy mealplan and add meal without section
   
2. Reload integration in Home assistant
3. See error in Home assistant logs
   Error fetching grocy data: Update failed: 1 validation error for MealPlanSectionResponse name none is not an allowed value (type=type_error.none.not_allowed)

General information to help debugging:

What sensors do you have enabled? Are they working and/or what state are they in? Do you have the corresponding functions enabled in Grocy?
Chores, mealplan, overdue chores, overdue tasks, tasks

What is your installed versions of Home Assistant, Grocy and this integration?
Grocy v4.3.4
by Grocy
Version: v4.11.1

Home Assistant 2023.8.3

Grocy Version 4.0.2

How do you have Grocy installed? Add-on or external?
External

[Disane87]

I have the same error

[themagicpanda]

I am also having this issue.

[marikakief]

I am experiencing the same.