feat(npm): make repo rules reproducible

[tyler-french]

In order to use the --repo_contents_cache, we need to mark the repository rule as reproducible.

See bazel-contrib/bazel-gazelle#2119 as an example

Changes are visible to end-users: yes/no

The contents of their repo_contents_cache might be different.

[CLAassistant]

All committers have signed the CLA.

[aspect-workflows]

Test

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222 tests (100.0%) were fully cached saving 28s.

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e2e/bzlmod

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e2e/gyp_no_install_script

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e2e/js_image_oci

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1 test (100.0%) was fully cached saving 5s.

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e2e/npm_link_package

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3 tests (100.0%) were fully cached saving 605ms.

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e2e/npm_link_package-esm

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3 tests (100.0%) were fully cached saving 479ms.

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e2e/npm_translate_lock

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1 test (100.0%) was fully cached saving 31ms.

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e2e/npm_translate_lock_empty

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e2e/npm_translate_lock_multi

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e2e/npm_translate_lock_partial_clone

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e2e/npm_translate_lock_replace_packages

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e2e/npm_translate_lock_subdir_patch

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e2e/npm_translate_package_lock

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1 test (100.0%) was fully cached saving 31ms.

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e2e/npm_translate_yarn_lock

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1 test (100.0%) was fully cached saving 31ms.

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e2e/package_json_module

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1 test (100.0%) was fully cached saving 496ms.

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e2e/pnpm_lockfiles

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e2e/pnpm_workspace

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e2e/pnpm_workspace_rerooted

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e2e/repo_mapping

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e2e/rules_foo

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e2e/runfiles

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e2e/vendored_node

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Buildifier      Format

[jbedard]

@tyler-french have time to fix the lint errors? Maybe switch to:

if not hasattr(rctx, "repo_metadata"):
    return None
return rctx.repo_metadata(reproducible = reproducible)

which will allow simply deleting 2 lines if/when we remove older bazel versions that need the if