feat: add symbol/replace package

[adity1raut]

Description

What is the purpose of this pull request?

Package Overview

The package is modeled after existing symbol utilities in the repository, including:

• symbol/has-instance
• symbol/iterator
• symbol/async-iterator
• symbol/is-concat-spreadable

The new package exports Symbol.replace when available in the current environment.

---

Additional Implementation Details

• Copy one of the existing symbol packages as a template.
• Rename the package directory and files accordingly.
• Replace identifiers throughout the package
  (e.g., has-instance → replace, HasInstanceSymbol → ReplaceSymbol).
• Ensure the copyright year is 2025.
• Update descriptions based on MDN documentation for Symbol.toStringTag.
• Update examples to reflect the symbol’s intended usage.
• Run tests, benchmarks, and examples to verify correctness.
• Check for any copy-paste errors.

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: add symbol/replace #8479

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

If you answered "yes" to using AI assistance, please provide a short disclosure indicating how you used AI assistance. This helps reviewers determine how much scrutiny to apply when reviewing your contribution. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

{{TODO: add disclosure if applicable}}

---

@stdlib-js/reviewers

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Coverage Report

Package	Statements	Branches	Functions	Lines
symbol/replace	$\color{green}103/103$ $color{green}+100.00%$	$\color{red}2/3$ $color{green}+66.67%$	$\color{green}0/0$ $color{green}+100.00%$	$\color{green}103/103$ $color{green}+100.00%$

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

[adity1raut]

PTAL /cc @kgryte

[kgryte]

This PR needs significant clean-up, as there are numerous copy-paste mistakes. You need to be sure to update all content to replace symbol.replace. Currently, you have a number of hasInstance references from the copied packages. All of those need to be addressed before this PR can move forward.

[kgryte]

Ref: a68d5d9

[stdlib-bot]

Thank you for working on this pull request. However, we cannot accept your contribution as the issue this pull request seeks to resolve has already been addressed in a different pull request or commit.

Thank you again for your interest in stdlib, and we look forward to reviewing your future contributions.