fix(EnumFilter): incorrect selected value

[ArgoZhang]

Link issues

fixes #6333

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

Fix incorrect selected value in EnumFilter by initializing and resetting filter inputs to empty strings instead of null

Bug Fixes:

• Initialize EnumFilter's private values _value1 and _value2 to empty strings by default
• Reset _value1 and _value2 to empty strings instead of null in Reset and SetFilterConditionsAsync

[sourcery-ai]

Reviewer's Guide

Updated default and reset filter input values to use empty strings instead of null to correct selected value handling in the EnumFilter component.

Class diagram for updated EnumFilter value handling

classDiagram
    class EnumFilter {
        +IEnumerable<SelectedItem>? Items
        -string? _value1 = ""
        -string? _value2 = ""
        +override void Reset()
        +override Task SetFilterConditionsAsync(FilterKeyValueAction filter)
    }

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File-Level Changes

Change	Details	Files
Consistently use empty strings for filter values instead of null	Initialize _value1 and _value2 to empty strings at declaration Set _value1 and _value2 to empty strings in Reset method Assign empty strings to _value1 and _value2 in SetFilterConditionsAsync when clearing filters	src/BootstrapBlazor/Components/Filters/EnumFilter.razor.cs

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#6333	The EnumFilter should show all values by default.	✅
#6333	The EnumFilter should correctly display the selected value.	✅

Possibly linked issues

• bug(EnumFilter): incorrect selected value #6333: PR fixes issue by initializing and resetting filter values to empty string instead of null in EnumFilter.
• bug(EnumFilter): incorrect selected value #6333: The PR fixes the incorrect handling of selected values in the EnumFilter component used in table controls.

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[sourcery-ai]

Hey @ArgoZhang - 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 (8775218) to head (97c0cc4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #6334   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          717       717           
  Lines        31558     31560    +2     
  Branches      4457      4457           
=========================================
+ Hits         31558     31560    +2     

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

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