Fix lint:cjs to explicitly ignore package.json and package-lock.json

[Copilot]

The lint:cjs npm script was not consistently ignoring package.json and package-lock.json files across all contexts, causing CI failures when these files didn't match prettier's formatting expectations.

Changes

• Added explicit --ignore-path ../../../.prettierignore flag to format:cjs and lint:cjs scripts in actions/setup/js/package.json

Context

The root .prettierignore already contains patterns for package.json and package-lock.json, but prettier wasn't consistently applying them when run from the actions/setup/js subdirectory. Other scripts in the same package.json (format:pkg-json, check:pkg-json) already use this explicit ignore-path pattern.

- "lint:cjs": "npx prettier --check '**/*.cjs' '**/*.ts' '**/*.json'",
+ "lint:cjs": "npx prettier --check '**/*.cjs' '**/*.ts' '**/*.json' --ignore-path ../../../.prettierignore",

Original prompt

Reference: https://github.com/githubnext/gh-aw/actions/runs/20556731587/job/59041958931#step:6:1

lint:cjs should ignore package.json and package-lock.json files

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