feat(IContextMenuItem): add IsShow parameter

[AiYuZhen]

增加上下文菜单项反排序。
增加 TrimStartAndEndDivider 参数，确保开始及结尾菜单项不是分割线。

Link issues

fixes #7605

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Add configurable trimming of leading and trailing dividers and support ordered rendering for context menu items.

New Features:

• Introduce a TrimStartAndEndDivider parameter on ContextMenu to optionally remove leading and trailing divider items from the rendered menu.
• Add an Order parameter to context menu items and dividers to control their display order within the menu.

Tests:

• Add unit tests covering trimming of start/end dividers and ordered rendering of context menu items.

[bb-auto]

Thanks for your PR, @AiYuZhen. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[sourcery-ai]

Reviewer's Guide

Implements explicit ordering for context menu items and dividers, and adds an option to trim leading/trailing dividers from rendered context menus, with accompanying unit tests.

Sequence diagram for rendering ordered and trimmed context menu

sequenceDiagram
  actor User
  participant Browser
  participant ContextMenu

  User->>Browser: Right click target
  Browser->>ContextMenu: Render context menu
  ContextMenu->>ContextMenu: GetContextMenuItems()
  activate ContextMenu
  ContextMenu->>ContextMenu: Sort _contextMenuItems by Order
  alt TrimStartAndEndDivider enabled
    ContextMenu->>ContextMenu: Remove leading ContextMenuDivider items
    ContextMenu->>ContextMenu: Remove trailing ContextMenuDivider items
  end
  ContextMenu-->>Browser: Ordered and trimmed items
  deactivate ContextMenu
  Browser-->>User: Display context menu

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Class diagram for ordered and trimmed context menu items

classDiagram

class ContextMenu {
  +RenderFragment ChildContent
  +bool TrimStartAndEndDivider
  -List~IContextMenuItem~ _contextMenuItems
  -List~IContextMenuItem~ GetContextMenuItems()
}

class IContextMenuItem {
  +int Order
}

class ContextMenuItem {
  +string Text
  +int Order
}

class ContextMenuDivider {
  +int Order
}

ContextMenuItem ..|> IContextMenuItem
ContextMenuDivider ..|> IContextMenuItem
ContextMenu o--> IContextMenuItem

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File-Level Changes

Change	Details	Files
Add TrimStartAndEndDivider option and centralized item filtering/ordering logic for ContextMenu rendering.	Introduce TrimStartAndEndDivider boolean parameter on the context menu component to control trimming of leading and trailing divider items. Add GetContextMenuItems helper that sorts menu items by their Order property and conditionally removes divider items from the start and end of the collection. Update the ContextMenu.razor markup to iterate over the filtered/sorted items from GetContextMenuItems instead of the raw backing list.	src/BootstrapBlazor/Components/ContextMenu/ContextMenu.razor.cs src/BootstrapBlazor/Components/ContextMenu/ContextMenu.razor
Introduce per-item ordering support across context menu items and dividers via IContextMenuItem.	Extend IContextMenuItem interface with an Order property to define display order of menu entries. Add Order parameter implementation to ContextMenuItem and ContextMenuDivider so they both participate in ordering.	src/BootstrapBlazor/Components/ContextMenu/IContextMenuItem.cs src/BootstrapBlazor/Components/ContextMenu/ContextMenuItem.cs src/BootstrapBlazor/Components/ContextMenu/ContextMenuDivider.cs
Add unit tests to validate trimming behavior and ordering of context menu items and dividers.	Add ContextMenu_TrimStartAndEndDivider_Ok test to assert that leading and trailing dividers are removed when trimming is enabled while preserving inner dividers. Add ContextMenuItem_Order_Ok test to assert that items and dividers are rendered in ascending Order and that the markup applies the correct CSS classes.	test/UnitTest/Components/ContextMenuTest.cs

Possibly linked issues

• feat(EditorForm): add IgnoreItems parameter #7607: PR implements menu item Order sorting (and divider trimming), directly solving the ContextMenu sorting feature request.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (856d896) to head (a6920ca).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #7608   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          749       749           
  Lines        33003     33005    +2     
  Branches      4580      4580           
=========================================
+ Hits         33003     33005    +2     

Flag	Coverage Δ
BB	100.00% <100.00%> (?)

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