feat(Split): add SetLeftWidth method

[ArgoZhang]

add SetLeftWidth method

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 #4815

Regression?

• Yes
• No

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

[是否影响老版本]

Risk

• High
• Medium
• Low

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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 the SetLeftWidth method to the Split component to enable setting the left pane's width, and include a corresponding unit test to ensure its functionality.

New Features:

• Introduce the SetLeftWidth method to allow setting the width of the left pane in the Split component.

Tests:

• Add a unit test to verify the functionality of the SetLeftWidth method in the Split component.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR implements a new SetLeftWidth method for the Split component, allowing dynamic control of the left pane's width. The implementation includes JavaScript interop to modify the flex-basis property of the left pane, along with corresponding C# method and demo updates.

Sequence diagram for SetLeftWidth method invocation

sequenceDiagram
    actor User
    participant DemoBlock
    participant Split
    participant JavaScript
    User->>DemoBlock: Click Button (e.g., "25%")
    DemoBlock->>Split: OnSetLeft("25%")
    Split->>JavaScript: setLeft(Id, "25%")
    JavaScript-->>Split: Update flex-basis
    Split-->>DemoBlock: Completion
    DemoBlock-->>User: UI Updated

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Class diagram for the Split component with SetLeftWidth method

classDiagram
    class Split {
        +Task SetLeftWidth(string leftWidth)
    }
    note for Split "The SetLeftWidth method allows setting the left pane's width dynamically."

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File-Level Changes

Change	Details	Files
Added new SetLeftWidth method to control left pane width	Added public SetLeftWidth method that calls JavaScript interop Implemented JavaScript setLeft function to modify flex-basis property Added unit test to verify SetLeftWidth functionality	src/BootstrapBlazor/Components/Split/Split.razor.cs src/BootstrapBlazor/Components/Split/Split.razor.js test/UnitTest/Components/SplitTest.cs
Added demonstration for the new SetLeftWidth functionality	Created new demo block with buttons to set different widths (25%, 50%, 100%) Added Split component reference and handler method for the demo Updated localization files for new demo content	src/BootstrapBlazor.Shared/Components/Samples/Splits.razor src/BootstrapBlazor.Shared/Components/Samples/Splits.razor.cs src/BootstrapBlazor.Shared/Locales/en-US.json src/BootstrapBlazor.Shared/Locales/zh-CN.json

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#4815	Support programmatic control of split pane maximize/minimize	❌	The PR adds a SetLeftWidth method to control the width of the left pane, but does not implement maximize/minimize functionality through code
#4815	Enable automatic minimize/restore of first pane based on page width	❌	The PR does not implement any automatic width-based behavior for minimizing/restoring panes

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[sourcery-ai]

Hey @ArgoZhang - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Security: all looks good
• 🟡 Testing: 2 issues 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 (4dde0d5) to head (eb956f8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #4818   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          621       621           
  Lines        27410     27411    +1     
  Branches      3930      3930           
=========================================
+ Hits         27410     27411    +1     

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