feat(Row): support custom class attribute

[ArgoZhang]

support custom class attribute

Summary of the changes (Less than 80 chars)

简单描述你更改了什么, 不超过80个字符；如果有关联 Issue 请在下方填写相关编号

Description

fixes #5111

Regression?

• Yes
• No

[If yes, specify the version the behavior has regressed from]

[是否影响老版本]

Risk

• High
• Medium
• Low

[Justify the selection above]

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 support for custom class attribute to the Row component.

New Features:

• Allow setting custom classes on the Row component using AdditionalAttributes.

Tests:

• Added unit tests to verify the functionality of custom classes.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request introduces the ability to add custom class attributes to the Row component.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added support for custom class attribute	Added ClassString property to compute the final CSS class string based on the AdditionalAttributes. Applied the ClassString property to the div element in the Row component. Added unit tests to verify the functionality of the custom class attribute and ensure that the d-none class is always present if no custom class is provided or if the custom class is empty. Updated the Row component to use the new ClassString property to render the class attribute. Added unit tests to verify the ClassString property and its interaction with the AdditionalAttributes parameter. Added a test case to verify that the d-none class is always present even when custom classes are provided via AdditionalAttributes. Added a test case to verify that custom classes are correctly applied to the Row component via AdditionalAttributes. Added a test case to verify that the ClassString property correctly handles null or empty AdditionalAttributes. Added a test case to verify that the ClassString property correctly merges the d-none class with custom classes provided via AdditionalAttributes. Added a test case to verify that the ClassString property correctly handles multiple custom classes provided via AdditionalAttributes.	src/BootstrapBlazor/Components/Row/Row.razor.cs src/BootstrapBlazor/Components/Row/Row.razor test/UnitTest/Components/RowTest.cs

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#5111	Make class attribute work like other components	✅

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[sourcery-ai]

Hey @ArgoZhang - I've reviewed your changes - here's some feedback:

Overall Comments:

• The hardcoded 'd-none' class makes rows hidden by default - is this intentional? Consider removing this default or document why it's necessary.
• Please complete the PR description template in English to improve collaboration.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟡 Testing: 1 issue found
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (96c3db5) to head (baf4a67).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5113   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          634       634           
  Lines        28171     28174    +3     
  Branches      4041      4041           
=========================================
+ Hits         28171     28174    +3     

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