Modal dialog md breakpoint issue fixed

[Riyazul555]

Description

Motivation & Context

Type of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would change existing functionality)

Checklist

• I have read the contributing guidelines
• My code follows the code style of the project (using npm run lint)
• My change introduces changes to the documentation
• I have updated the documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed

Live previews

• https://deploy-preview-{your_pr_number}--twbs-bootstrap.netlify.app/

Related issues

Closes #40591

[poswalsameer]

Hi @julien-deramond, I am working on this issue, can you please assign this to me?

[poswalsameer]

Hi @louismaximepiton, can I know the reason for my PR getting closed? So, that I can improve on it.

[louismaximepiton]

As mentioned in #40733, your PR was a duplicate of this one, which we had no time to look at, just keeping the repository tidy.

[poswalsameer]

As mentioned in #40733, your PR was a duplicate of this one, which we had no time to look at, just keeping the repository tidy.

sure, thanks