Setting Label.FontSize at runtime does not do anything

[mattleibow]

Description

Setting font size does not work.

Steps to Reproduce

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="Maui.Controls.Sample.MainPage">
    <StackLayout Padding="30" Spacing="20">

        <Label
            x:Name="myLabel"
            Text="Hello, World!"
            HorizontalOptions="Center"
            VerticalOptions="Center">
            <VisualStateManager.VisualStateGroups>
                <VisualStateGroupList>
                    <VisualStateGroup>
                        <VisualState x:Name="Normal">
                            <VisualState.StateTriggers>
                                <AdaptiveTrigger MinWindowWidth="500" />
                            </VisualState.StateTriggers>
                            <VisualState.Setters>
                                <Setter Property="Background" Value="Red" />
                                <Setter Property="FontSize" Value="48" />
                            </VisualState.Setters>
                        </VisualState>
                        <VisualState x:Name="Small">
                            <VisualState.StateTriggers>
                                <AdaptiveTrigger MinWindowHeight="0" MinWindowWidth="0" />
                            </VisualState.StateTriggers>
                            <VisualState.Setters>
                                <Setter Property="Background" Value="Green" />
                                <Setter Property="FontSize" Value="10" />
                            </VisualState.Setters>
                        </VisualState>
                    </VisualStateGroup>
                </VisualStateGroupList>
            </VisualStateManager.VisualStateGroups>
        </Label>

        <Button Text="Change Font Size"  Clicked="Button_Clicked" />

    </StackLayout>
</ContentPage>

using Microsoft.Maui.Controls;
using Microsoft.Maui.Handlers;

namespace Maui.Controls.Sample
{
	public partial class MainPage
	{
		public MainPage()
		{
			InitializeComponent();
		}

		void Button_Clicked(object sender, System.EventArgs e)
		{
			myLabel.FontSize += 10;
		}
	}
}

Version with bug

Release Candidate 2 (current)

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android, Windows, macOS, Other (Tizen, Linux, etc. not supported by Microsoft directly)

Affected platform versions

All

Did you find any workaround?

No.

Relevant log output

No response

[mattleibow]

Seems to have been accidentally removed - probably because we had no tests on this area :(

#5664