chore : fix javascript linting error ( issue stdlib-js#8567)

[shubham220420]

Resolves #8567 .

Description

This pull request fixes JavaScript linting errors in the repository as specified in issue #8567.
The changes ensure correct require ordering and improve code quality in the affected JavaScript example files.

This pull request:

• Fixes modular scope of onDrain function

Related Issues

This pull request has the following related issues:

• Fix JavaScript lint errors #8567

Questions

Any questions for reviewers of this pull request?

No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

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• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

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