fix(Chart): support custom label formatter

[ArgoZhang]

Link issues

fixes #6776

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

Update Bar chart sample to display data labels by default and use decimal data values

Enhancements:

• Enable ShowDataLabel option in Bar chart sample
• Convert sample Bar chart data values to floats for label formatting demonstration

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR updates the Bar chart sample to showcase custom label formatting by enabling data labels and switching to decimal data points, and it updates the server project file to reference the chart library version that includes the new formatter support.

Class diagram for updated Bar chart sample data initialization

classDiagram
    class ChartDataSource {
        Options : ChartOptions
        Labels : IEnumerable<string>
        Data : List<ChartDataset>
    }
    class ChartOptions {
        Title : string
        ShowDataLabel : bool
        X : AxisOptions
        Y : AxisOptions
    }
    class AxisOptions {
        Title : string
        Stacked : bool
    }
    class ChartDataset {
        Label : string
        Data : IEnumerable<object>
    }
    ChartDataSource --> ChartOptions : has
    ChartDataSource --> ChartDataset : contains
    ChartOptions --> AxisOptions : has X, Y
    ChartDataSource : +OnInit(bool stacked, bool setTitle = true)
    ChartOptions : +ShowDataLabel (added)
    ChartDataset : +Data (now decimal values)

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File-Level Changes

Change	Details	Files
Enhance Bar chart sample for custom label formatting	Enable data labels by setting Options.ShowDataLabel = true Generate decimal data points by dividing random values by 10.0f	src/BootstrapBlazor.Server/Components/Samples/Charts/Bar.razor.cs
Update server project reference for label formatter support	Bump chart library version in BootstrapBlazor.Server.csproj	src/BootstrapBlazor.Server/BootstrapBlazor.Server.csproj

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#6776	Enable Chart DataLabel to display decimal values instead of rounding to integers.	✅
#6776	Allow customization of the DataLabel formatter for Chart components, so users can control how numbers are displayed.	✅

Possibly linked issues

• feat(Chart): 柱状图的数据显示(ShowDataLabel)支持小数 #6776: The PR adds custom formatter support to display decimals in bar chart data labels, as requested in the issue.

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[Copilot]

Pull Request Overview

Fixes chart custom label formatter support by enabling data labels and updating chart data generation to use decimal values instead of integers, along with upgrading the BootstrapBlazor.Chart package version.

• Enables data labels on bar charts by setting ShowDataLabel = true
• Changes chart data generation to produce decimal values (dividing by 10.0f) for better label formatting demonstration
• Updates BootstrapBlazor.Chart package from version 9.0.0 to 9.0.1

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Bar.razor.cs	Enables data labels and modifies data generation to use decimal values
BootstrapBlazor.Server.csproj	Updates BootstrapBlazor.Chart package to version 9.0.1

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[sourcery-ai]

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

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (a4748c4) to head (99a3aed).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #6778   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          739       739           
  Lines        31721     31721           
  Branches      4464      4464           
=========================================
  Hits         31721     31721           

Flag	Coverage Δ
BB	100.00% <ø> (?)

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