Fix FluentWindow behaviour

[Nice3point]

Pull request type

Please check the type of change your PR introduces:

• Update
• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes

What is the current behavior?

The window dimensions do not change in runtime. Direct set width or height does not work

What is the new behavior?

Removing the default values from the .cs file solves the problem. The values themselves are already set in the style, so the window behaviour is not changed in any way

wpfui/src/Wpf.Ui/Controls/FluentWindow/FluentWindow.xaml

Lines 29 to 32 in 3689074

	<Setter Property="Height" Value="600" />
	<Setter Property="MinHeight" Value="320" />
	<Setter Property="Width" Value="1100" />
	<Setter Property="MinWidth" Value="460" />

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