doc(Drawer): update drawer sample code

[ArgoZhang]

update drawer sample code

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 #5038

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

Documentation:

• Updated the drawer sample code.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates the drawer sample code to fix issue #5038. It moves the "Open" button inside a <section ignore> tag in three different demo blocks within the Drawers.razor file. This change ensures that the button is excluded from automated UI testing.

State diagram for drawer component states

stateDiagram-v2
    [*] --> Closed
    Closed --> Open: Click Open button
    Open --> Closed: Click Close button

    state Open {
        [*] --> WithBackdrop
        [*] --> WithoutBackdrop
        WithBackdrop --> Resizable: AllowResize=true
        WithoutBackdrop --> Resizable: AllowResize=true
    }

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File-Level Changes

Change	Details	Files
Move "Open" button inside <section ignore> tag	Moved the "Open" button within the "Placement" demo block. Moved the "Open" button within the "NoBackdrop" demo block. Moved the "Open" button within the "DrawerService" demo block.	src/BootstrapBlazor.Server/Components/Samples/Drawers.razor

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#5038	Add sample code for Drawer component	✅

Possibly linked issues

• doc(Drawer): update drawer sample code #5038: The PR updates the Drawer sample code as requested in the issue.

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[sourcery-ai]

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

Overall Comments:

• Please document the purpose of the 'ignore' attribute being added to the section elements - what does it control?

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 (7fa251c) to head (c3c05b2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5039   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          631       631           
  Lines        27957     27957           
  Branches      4006      4006           
=========================================
  Hits         27957     27957           

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