refactor!: update fft/base/fftpack/float32/rffti to use integer array view

[gunjjoshi]

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type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes. report:

• task: lint_filenames status: passed
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• task: lint_license_headers status: passed ---

Resolves a part of stdlib-js/metr-issue-tracker#1321.

Description

What is the purpose of this pull request?

This pull request:

• updates fft/base/fftpack/float32/rffti to use integer array views internally.

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• resolves a part of [RFC]: update fft/base/fftpack/float32/* packages to use integer array view metr-issue-tracker#1321.

Questions

Any questions for reviewers of this pull request?

No.

Other

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No.

Checklist

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• Read, understood, and followed the contributing guidelines.

AI Assistance

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Used Claude code to review code and implement changes in docs and tests.

---

@stdlib-js/reviewers

[gunjjoshi]

Along with stdlib-js/metr-issue-tracker#1321, this PR also updates the variable name from workspace to w, since it conflicts with a reserved keyword in the repl.

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
fft/base/fftpack/float32/rffti	$\\color{green}421/421$ $\\color{green}+100.00\\%$	$\\color{green}12/12$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}421/421$ $\\color{green}+100.00\\%$

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