chore: consistently use direct imports for Lodash functions

[TrevorBurnham]

This commit replaces barrel imports like

import { range } from 'lodash'

with direct imports like

import range from 'lodash/range'

All of these imports are in test code (Lodash is a devDependency only), so this won't affect the build. But it will make code style more consistent, and it should slightly improve test performance.

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[pan-kot]

Should we add an ESLint rule for pages to reinforce this?