refactor(Modal): remove dialog variable

[ArgoZhang]

Link issues

fixes #5548
[Please fill in the relevant Issue number after the # above, such as #42]
[请在上方 # 后面填写相关 Issue 编号，如 #42]

Summary By Copilot

This pull request includes changes to the Modals.razor and Modal.razor.js files to improve modal functionality and code consistency. The most important changes include removing the maximize button from draggable modals, cleaning up the modal close event handling, and ensuring consistent handling of the modal's original style.

Improvements to modal functionality and code consistency:

• src/BootstrapBlazor.Server/Components/Samples/Modals.razor: Removed the ShowMaximizeButton attribute from the ModalDialog component when IsDraggable is set to true.
• src/BootstrapBlazor/Components/Modal/Modal.razor.js: Cleaned up the event handling code by removing unnecessary conditions and event listeners related to draggable modals in the hidden.bs.modal event handler.
• src/BootstrapBlazor/Components/Modal/Modal.razor.js: Changed the condition checks for modal.originalStyle from void 0 to null for consistency in the backupBodyStyle and restoreBodyStyle functions.

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

Refactors the Modal component to improve code consistency and remove unnecessary code. This includes removing the maximize button from draggable modals and cleaning up event handling.

Enhancements:

• Removes the maximize button from draggable modals.
• Cleans up modal close event handling.
• Ensures consistent handling of the modal's original style.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request refactors the Modal component by removing the dialog variable and making improvements to modal functionality and code consistency. The changes include removing the maximize button from draggable modals, cleaning up the modal close event handling, and ensuring consistent handling of the modal's original style.

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

File-Level Changes

Change	Details	Files
Removed the maximize button from draggable modals.	Removed the ShowMaximizeButton attribute from the ModalDialog component when IsDraggable is set to true.	src/BootstrapBlazor.Server/Components/Samples/Modals.razor
Cleaned up the modal close event handling.	Removed unnecessary conditions and event listeners related to draggable modals in the hidden.bs.modal event handler.	src/BootstrapBlazor/Components/Modal/Modal.razor.js
Ensured consistent handling of the modal's original style.	Changed the condition checks for modal.originalStyle from void 0 to null for consistency in the backupBodyStyle and restoreBodyStyle functions.	src/BootstrapBlazor/Components/Modal/Modal.razor.js

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#5548	Remove the dialog variable from the Modal component.	✅

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[sourcery-ai]

We encountered an error and are unable to review this PR. We have been notified and are working to fix it.

You can try again by commenting this pull request with @sourcery-ai review, or contact us for help.

[ArgoZhang]

@sourcery-ai review

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (f93cb6f) to head (7c6ba93).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5549   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          649       649           
  Lines        29607     29607           
  Branches      4173      4173           
=========================================
  Hits         29607     29607           

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