feat(TextArea): add UseShiftEnter parameter

[ArgoZhang]

add OnKeyUpAsync parameter

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 #5315

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

New Features:

• Added an OnKeyUpAsync parameter to the TextArea component. This parameter allows developers to specify a callback function that will be invoked when the user releases a key while the textarea is focused.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR introduces an asynchronous callback for keyboard events by adding an OnKeyUpAsync parameter and updating the Textarea component to handle keyup events. The changes include parameter declaration, event binding, and method implementation for handling keys.

Sequence diagram for Textarea KeyUp event handling

sequenceDiagram
    participant Browser as Browser
    participant TA as Textarea

    Browser->>TA: KeyUp Event (KeyboardEventArgs)
    TA->>TA: OnKeyUp(KeyboardEventArgs)
    alt Key == "Enter"
        TA-->>TA: Invoke OnEnterAsync(Value)
    else Key == "Escape"
        TA-->>TA: Invoke OnEscAsync(Value)
    end
    alt OnKeyUpAsync present
        TA->>TA: await OnKeyUpAsync(KeyboardEventArgs)
    end
    TA-->>Browser: Event handled

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Updated class diagram for Textarea component

classDiagram
    class Textarea {
      +bool IsAutoScroll
      +Func<KeyboardEventArgs,Task>? OnKeyUpAsync
      -async Task OnKeyUp(KeyboardEventArgs args)
      // Other existing properties and methods not shown
    }

    note for Textarea "Added asynchronous keyup callback support via OnKeyUpAsync and event binding"

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File-Level Changes

Change	Details	Files
Added asynchronous keyboard event callback parameter	Declared the OnKeyUpAsync parameter in the Textarea code-behind Included the necessary using directive for keyboard event handling	Textarea.razor.cs
Integrated keyup event handling in the Textarea component	Implemented the OnKeyUp method to handle Enter, Escape, and custom keyup events Bound the @onkeyup event in the Textarea Razor file to the new OnKeyUp method	Textarea.razor.cs Textarea.razor

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#5315	Support Enter key to send message in Textarea component	✅
#5315	Implement Shift+Enter for creating a new line	❌	The PR does not explicitly handle Shift+Enter for creating a new line. It only adds an OnKeyUpAsync parameter and handles Enter and Escape key events.

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[sourcery-ai]

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

Overall Comments:

• Consider extracting the key check logic in OnKeyUp to a separate method for better readability.
• It might be helpful to include a brief description of the intended use case for the OnKeyUpAsync parameter in the component's documentation.

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 (7b78b81) to head (3f5750d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5351   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          644       644           
  Lines        29210     29212    +2     
  Branches      4124      4125    +1     
=========================================
+ Hits         29210     29212    +2     

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