chore: fix JavaScript lint errors (issue #11852)

[0xdeadd]

Summary

Fixes 3 lint errors from CI run on 2026-04-30:

• stdlib/no-unnecessary-nested-functions in @stdlib/_tools/github/star-repo/lib/factory.js: moved nested done callback from inside star to the outer factory scope
• stdlib/jsdoc-doctest in @stdlib/strided/base/binary-dtype-signatures/lib/index.js: corrected doctest return value from float64 to float32 to match actual output (consistent with main.js)
• stdlib/eol-open-bracket-spacing in @stdlib/blas/base/idamax/test/test.ndarray.js: removed spaces in multi-line Float64Array([ ... ]) expressions at lines 60, 80, 98 to match the style used elsewhere in the file

Related Issues

resolves #11852

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[kgryte]

LGTM. Thanks, @0xdeadd!

[stdlib-bot]

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