fix(tabs): touch swipe on tab-items doesn't update the tab value

[capdiem]

Fixes #2391

[Copilot]

Pull Request Overview

This pull request fixes issue #2391 by standardizing binding syntax in various tab components and enhancing the internal index update logic in the MWindow component. The key changes are:

• Improvements in binding syntax across Razor components (DesktopTabs, TabItems, OverflowToMenu, IconAndText, Grow, DynamicTabs, DynamicHeight).
• An early return in MWindow.UpdateInternalIndex to prevent unnecessary updates.
• Use of TabItems.Count > 0 in MTabs for clarity and potential performance improvements.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

File	Description
src/Masa.Blazor/Components/Window/MWindow.razor.cs	Added an early return in UpdateInternalIndex to prevent redundant state updates
src/Masa.Blazor/Components/Tabs/MTabs.razor	Updated logical condition from Any() to Count > 0 and introduced a ValueChanged callback in the MWindow component
docs/Masa.Blazor.Docs/Examples/components/tabs/*.razor	Revised binding syntax in multiple examples to ensure consistency across documentation

Comments suppressed due to low confidence (2)

src/Masa.Blazor/Components/Window/MWindow.razor.cs:65

• [nitpick] Consider adding an inline comment clarifying that the early return is used to prevent redundant updates, which improves performance and avoids unnecessary computations.

if (_prevInternalIndex == InternalIndex) {

src/Masa.Blazor/Components/Tabs/MTabs.razor:36

• Ensure that the ValueChanged callback is handled properly within the MWindow component to support effective two-way binding, aligning with the updated binding syntax.

<MWindow Value="Value" ValueChanged="@ValueChanged">