chore: fix EditorConfig lint errors (issue #11326)

[GuneetGill]

Description

What is the purpose of this pull request?

This pull request:

• Fixes EditorConfig lint failures reported in the automated workflow by aligning two files with .editorconfig rules.
• Replaces tab indentation with two-space indentation in lib/node_modules/@stdlib/_tools/lint/pkg-json/test/fixtures/invalid.json (JSON fixtures use spaces; the file remains intentionally invalid JSON for tests).
• Replaces space indentation with tab indentation inside the sample-output block comments in lib/node_modules/@stdlib/ndarray/to-fancy/examples/set_slice.3d.js (JavaScript uses tabs).

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• Fix EditorConfig lint errors #11326

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 asked Claude to explain the codebase and what files to modify.

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[stdlib-bot]

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