feat: add assert/has-split-symbol-support

[DivyanshuVortex]

Resolves #8467 .

Description

This PR implements the RFC for adding the package assert/has-split-symbol-support.

The package is modeled after existing packages:

• assert/has-iterator-symbol-support
• assert/has-is-concat-spreadable-symbol-support
• assert/has-has-instance-symbol-support

The only functional difference is that this package checks for the existence of Symbol.split.

Implementation steps completed:

• Copied assert/has-iterator-symbol-support
• Renamed all identifiers and references from iterator → split
• Updated logic to detect Symbol.split
• Verified correctness with local tests, examples, and benchmarks

Testing

All tests, examples, and benchmarks pass locally.

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

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?

• Yes
• [] 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

I Chatgpt it for better understanding

---

@stdlib-js/reviewers

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Coverage Report

Package	Statements	Branches	Functions	Lines
assert/has-split-symbol-support	$\color{green}90/90$ $color{green}+100.00%$	$\color{green}5/5$ $color{green}+100.00%$	$\color{green}1/1$ $color{green}+100.00%$	$\color{green}90/90$ $color{green}+100.00%$

The above coverage report was generated for the changes in this PR.

[stdlib-bot]

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2. Update your pull request description to include this checked box:

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Thank you for your understanding and cooperation. We look forward to reviewing your contribution!

[kgryte]

@DivyanshuVortex Thank you for opening this PR. Before this PR can move forward, you'll need to resolve CI failures.

[kgryte]

LGTM after clean-up