fix(node:path): toNamespacedPath bugfix

[dylan-conway]

What does this PR do?

Same fix as nodejs/node#52915, thanks @huseyinacacak-janea! Bun's implementation of toNamespacedPath is the same code adapted to zig, so the same bug existed.

[github-actions]

❌ @dylan-conway, your commit has failing tests :(

💪 1 failing tests Darwin AARCH64

• test/js/node/tls/node-tls-context.test.ts 1 failing

💻 1 failing tests Darwin x64 baseline

• test/js/bun/test/test-test.test.ts 1 failing

💻 2 failing tests Darwin x64

• test/js/bun/test/test-test.test.ts 1 failing
• test/js/web/streams/streams.test.js 1 failing

🐧💪 1 failing tests Linux AARCH64

• test/js/bun/http/serve-body-leak.test.ts 1 failing

🐧🖥 1 failing tests Linux x64 baseline

• test/js/node/child_process/child_process-node.test.js 1 failing

🐧🖥 1 failing tests Linux x64

• test/js/bun/http/serve-body-leak.test.ts 1 failing

🪟💻 12 failing tests Windows x64 baseline

• test/cli/install/bunx.test.ts 1 failing
• test/cli/install/registry/bun-install-registry.test.ts 1 failing
• test/cli/install/registry/bun-install-windowsshim.test.ts code 1
• test/integration/next-pages/test/dev-server-ssr-100.test.ts 1 failing
• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing
• test/js/bun/http/serve-body-leak.test.ts 1 failing
• test/js/bun/test/test-test.test.ts 1 failing
• test/js/node/child_process/child_process.test.ts 1 failing
• test/js/node/process/process.test.js 2 failing
• test/js/node/tls/node-tls-context.test.ts code 1
• test/js/node/watch/fs.watchFile.test.ts 3 failing

🪟💻 9 failing tests Windows x64

• test/bundler/large_asset_regression.test.ts 1 failing
• test/cli/install/bun-create.test.ts 1 failing
• test/cli/install/bunx.test.ts 1 failing
• test/js/bun/shell/leak.test.ts 1 failing
• test/js/bun/spawn/spawn.test.ts 1 failing
• test/js/bun/test/test-test.test.ts 1 failing
• test/js/node/process/process.test.js 2 failing
• test/js/node/tls/node-tls-context.test.ts code 1
• test/js/node/watch/fs.watchFile.test.ts SIGKILL

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