feat(WinBox): add background color variable

[ArgoZhang]

add background color variable

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 #4698

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 a background color variable to the WinBox component and enhance button styling with additional CSS classes.

New Features:

• Introduce a background color variable for the WinBox component.

Enhancements:

• Add CSS class 'me-2' to the 'Restore' and 'SetIcon' buttons for improved styling.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR adds styling improvements to the WinBox component by adjusting button spacing and layout. The changes are implemented through the addition of CSS margin utility classes to specific buttons.

Class diagram for CustomWinBoxContent component

classDiagram
    class CustomWinBoxContent {
        +Button StackWinBox
        +Button MinWinBox
        +Button MaxWinBox
        +Button RestoreWinBox
        +Button SetTitleWinBox
        +Button SetIconWinBox
        +WinBoxCloseButton
    }
    note for CustomWinBoxContent "Added CSS class 'me-2' to Restore and SetIcon buttons for spacing"

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File-Level Changes

Change	Details	Files
Added margin utility classes to improve button spacing	Added 'me-2' class to the Restore button for right margin spacing Added 'me-2' class to the SetIcon button for right margin spacing Improved visual separation between button groups with whitespace	src/BootstrapBlazor.Server/Components/Components/CustomWinBoxContent.razor

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#4698	Add a background color variable for WinBox component	❌	The diff only shows some minor UI changes related to button spacing (adding me-2 classes) but does not include any changes related to adding a background color variable for the WinBox component.

Possibly linked issues

• feat(WinBox): add background color variable #4698: The PR implements the feature requested in the issue by adding a background color variable.
• feat(WinBox): add background color variable #4698: PR introduces a variable to fix the background color issue described in the issue.

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[sourcery-ai]

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

Overall Comments:

• The PR title and description mention adding a background color variable, but the actual changes only show button margin adjustments. Please update the title and description to accurately reflect the changes being made.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 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 (6a0e155) to head (c6b298b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #4699   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          620       620           
  Lines        27378     27378           
  Branches      3923      3923           
=========================================
  Hits         27378     27378           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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