NumericUpDown selection bugs on spinner click

[zii-dmg]

Describe the bug

In NumericUpDown something wrong with text selections on spinner clicks.
Tested with Fluent theme.

1. First click on spinner with string format "G0" when numeric not focused -> text selected
2. Second click on spinner (numeric has focus) -> text lost selection

AvaNumericUpDown1.mp4

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Click on spinner with default string format when numeric not focused -> text length grows but only previous text size selected

AvaNumericUpDown2.mp4

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Click and hold on spinner when numeric not focused -> text selected, but when text length grows only previous text size selected

AvaNumericUpDown3.mp4

To Reproduce

Create NumericUpDown and some control to change focus. Then click on spinners as described above.

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="using:AvaTest"
        mc:Ignorable="d"
        Width="600" Height="400"
        x:Class="AvaTest.MainWindow"
        FontSize="30"
        Title="AvaTest">
    <StackPanel Spacing="6" Margin="6" Width="200">
        <NumericUpDown Value="0"/>
        <NumericUpDown Value="0" FormatString="G0"/>
    </StackPanel>
</Window>

Expected behavior

Text should be always and fully selected on any spinner click OR text should be always not selected on any spinner click.
In Qt 5 text fully selected on every spinner click.
In GTK 3 text not selected on any spinner click.

Avalonia version

11.2.3

OS

Windows

Additional context

No response