fix: TabSize style builder only uses Small

[wxwyz]

🐛 Bug Report

The FluentTabs TabSize property does not appear to work.

🤔 Expected Behavior

Size should change depending on supplied TabSize value.

😯 Current Behavior

Tab size always defaults to small (i.e. 6px)

💁 Possible Solution

/src/Core/Components/Tabs/FluentTabs.razor.cs

protected string? StyleValue => new StyleBuilder(Style)
        .AddStyle("padding", "6px", () => Size == TabSize.Small)
        .AddStyle("padding", "12px 10px", () => Size == TabSize.Medium)
        .AddStyle("padding", "16px 10px", () => Size == TabSize.Large)
        .AddStyle("width", Width, () => !string.IsNullOrEmpty(Width))
        .AddStyle("height", Height, () => !string.IsNullOrEmpty(Height))
        .Build();

🌍 Your Environment

• .NET 9 and Fluent UI Blazor library Version 4.11.3

[niltor]

@vnbaaij issue still exist in 4.12.0

[vnbaaij]

See #4002