Fix/lint errors

[Payal-Goswami]

Resolves #6976.

Add toLocaleString method to named-typed-tuple

Description

This pull request adds a toLocaleString method to named-typed-tuple instances.
The method provides locale-aware string representations of tuple values, similar
to the existing toString method. For example, large numbers are formatted with
commas or other locale-specific separators.

Changes

• Implemented toLocaleString in lib/main.js.
• Added unit tests in test/test.to_locale_string.js to verify functionality.

Questions

No.

Other

No.

Checklist

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

• Read, understood, and followed the contributing guidelines.
• Added tests.
• Verified tests pass locally.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
dstructs/named-typed-tuple	$\color{red}989/1825$ $\color{green}+54.19\%$	$\color{red}24/37$ $\color{green}+64.86\%$	$\color{red}7/41$ $\color{green}+17.07\%$	$\color{red}989/1825$ $\color{green}+54.19\%$

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

[kgryte]

The upstream issue has already been resolved in #8009. As such, I'll go ahead and close.

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