Fix JavaScript lint errors

## JavaScript Linting Failures

Linting failures were detected in the automated JavaScript lint workflow run.

### Workflow Details

- Run: https://github.com/stdlib-js/stdlib/actions/runs/13959029161
- Type: JavaScript Linting
- Date: 2025-03-20 00:08:36 UTC

### Error Details
```
make[1]: Entering directory '/home/runner/work/stdlib/stdlib'

Linting file: lib/node_modules/@stdlib/stats/base/dists/levy/ctor/lib/index.js

Linting file: lib/node_modules/@stdlib/blas/ext/base/gasumpw/lib/ndarray.js

Linting file: lib/node_modules/@stdlib/ndarray/base/map/lib/3d_blocked.js

Linting file: lib/node_modules/@stdlib/math/base/special/asin/lib/rational_rs.js

Linting file: lib/node_modules/@stdlib/proxy/ctor/lib/polyfill.js

/home/runner/work/stdlib/stdlib/lib/node_modules/@stdlib/proxy/ctor/lib/polyfill.js
23:1 error Displayed return value is `6.28`, but expected `3.14` instead stdlib/jsdoc-doctest
48:2 warning Unexpected 'todo' comment: 'TODO: polyfill implementation' no-warning-comments

✖ 2 problems (1 error, 1 warning)
1 error and 0 warnings potentially fixable with the `--fix` option.

Linting failed.

Linting file: lib/node_modules/@stdlib/plot/ctor/lib/render/svg/init.js

Linting file: lib/node_modules/@stdlib/stats/base/dists/erlang/mgf/lib/main.js

Linting file: lib/node_modules/@stdlib/random/streams/gumbel/lib/object_mode.js

Linting file: lib/node_modules/@stdlib/blas/base/scasum/lib/native.js

Linting file: lib/node_modules/@stdlib/blas/ext/base/dnannsumkbn/lib/dnannsumkbn.native.js

Linting file: lib/node_modules/@stdlib/array/base/assert/is-data-type/lib/index.js

Linting file: lib/node_modules/@stdlib/strided/base/unary-by/lib/unary.js

Linting file: lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-definition-case/lib/index.js

Linting file: lib/node_modules/@stdlib/math/base/assert/is-negative-zero/lib/index.js

Linting file: lib/node_modules/@stdlib/datasets/sotu/lib/browser_get_file.js

Linting file: lib/node_modules/@stdlib/math/base/special/ceilf/lib/native.js

Linting file: lib/node_modules/@stdlib/plot/sparklines/unicode/lib/render.js

Linting file: lib/node_modules/@stdlib/stats/strided/dminabs/lib/ndarray.js

Linting file: lib/node_modules/@stdlib/ndarray/base/assign/lib/6d_accessors.js

Linting file: lib/node_modules/@stdlib/math/strided/special/sqrt-by/lib/ndarray.js

Linting file: lib/node_modules/@stdlib/assert/has-define-properties-support/lib/define_properties.js

Linting file: lib/node_modules/@stdlib/assert/is-electron-renderer/lib/index.js

Linting file: lib/node_modules/@stdlib/stats/base/dists/arcsine/median/lib/main.js
make[1]: *** [/home/runner/work/stdlib/stdlib/tools/make/lib/lint/javascript/eslint.mk:255: eslint-files] Error 1
make[1]: Leaving directory '/home/runner/work/stdlib/stdlib'
make: *** [/home/runner/work/stdlib/stdlib/tools/make/lib/lint/javascript/Makefile:158: lint-javascript-files] Error 2
```

### Pull Request Instructions

- Please use the following PR title format:
"chore: fix JavaScript lint errors (issue #)".
- Reference this issue in the "Related Issues" section of the PR body as "resolves #".

Start with lib/node_modules/@stdlib/proxy/ctor/lib/polyfill.js, especially the doctest at line 23 and the TODO warning at line 48. Review the linked JavaScript lint workflow run, then rerun the JavaScript lint target locally. Done means the reported lint errors are resolved and the lint workflow passes.

Vom Indexierungsmodell aus dem Issue-Text verfasst.