fix(Select): not render UI sometime

[ArgoZhang]

not render UI sometime

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 #4765

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

Fix the rendering issue in the Select component by refactoring data handling and caching logic, and update unit tests to ensure correct behavior.

Bug Fixes:

• Fix the issue where the Select component UI does not render correctly under certain conditions by refactoring the data handling logic.

Enhancements:

• Refactor the Select component to improve data handling and caching, ensuring more efficient rendering and state management.

Tests:

• Update unit tests for the Select component to cover new data handling logic and ensure correct behavior when search text changes.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR refactors the Select component to improve its data management and UI rendering reliability. The implementation replaces the direct data source management with a more efficient caching mechanism and streamlines the item selection logic. The changes also improve the search functionality and virtual scrolling implementation.

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

File-Level Changes

Change	Details	Files
Implemented a new caching mechanism for Select items	Added _itemsCache property to store computed items Created Rows property to manage and cache item lists Removed _dataSource list in favor of the new caching system Added cache invalidation on parameter changes	src/BootstrapBlazor/Components/Select/Select.razor.cs
Refactored item selection and search functionality	Introduced SelectedRow property to manage item selection Simplified search text handling logic Improved virtual scrolling implementation Removed ResetSelectedItem method in favor of more focused functions	src/BootstrapBlazor/Components/Select/Select.razor.cs src/BootstrapBlazor/Components/Select/Select.razor
Updated UI rendering and event handling	Modified template to use SelectedRow instead of SelectedItem Updated search input binding mechanism Improved dropdown item rendering logic	src/BootstrapBlazor/Components/Select/Select.razor
Enhanced test coverage and sample code	Added new test cases for search functionality Updated existing tests to handle async operations Simplified sample code in Selects component	test/UnitTest/Components/SelectTest.cs src/BootstrapBlazor.Shared/Components/Samples/Selects.razor.cs

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#4765	Fix issue where changing select dropdown options doesn't work on first attempt	✅

Possibly linked issues

• bug(Select): 切换下拉框的选项不生效 #4765: PR fixes UI rendering issues related to async methods in Select component's OnSelectedItemChanged event.
• bug(Select): 切换下拉框的选项不生效 #4765: PR fixes rendering issues in Select component, related to issue with selection problems.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (caa0a52) to head (10fe1b8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #4798   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          620       620           
  Lines        27425     27415   -10     
  Branches      3925      3922    -3     
=========================================
- Hits         27425     27415   -10     

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