bench: refactor to use string interpolation in stats/base/dists/levy/mean

[daksha607]

Resolves a part of #8647.

Description

This pull request refactors the JavaScript benchmark for stats/base/dists/levy/mean to use string interpolation via @stdlib/string/format instead of string concatenation when specifying the benchmark name.

The change preserves the original benchmark name while aligning the benchmark implementation with the guidelines outlined in the RFC.

Related Issues

Does this pull request have any related issues?

#8647

Questions

No.

Other

No.

Checklist

• 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 consulted ChatGPT to understand the RFC requirements and stdlib contribution workflow, but the code changes themselves were authored manually.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/levy/mean	$\color{green}176/176$ $\color{green}+100.00%$	$\color{green}9/9$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}176/176$ $\color{green}+100.00%$

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