Corepack runs into an internal error with newest iron node image [Proxy issue]

When I try to install pnpm with corepack I get the following error with node image node:iron@sha256:04223c46b1b8998bccbb6e6208dbed8344916ffc1be9f446109ffcb9629ad791:

$ npm config set //$CI_SERVER_HOST/:_authToken $CI_JOB_TOKEN $ https_proxy=$CODE_PROXY corepack prepare --activate && corepack enable Preparing pnpm@8.15.6 for immediate activation... Internal Error: Error when performing the request to https://registry.npmjs.org/pnpm/-/pnpm-8.15.6.tgz; for troubleshooting help, see https://github.com/nodejs/corepack#troubleshooting at fetch (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:22882:11) at async fetchUrlStream (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:2[29](https://code.siemens.com/automation-core/ac-engineering/-/jobs/174743095#L29)14:20) at async installVersion (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:2[30](https://code.siemens.com/automation-core/ac-engineering/-/jobs/174743095#L30)84:18) at async Engine.ensurePackageManager (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:23380:32) at async PrepareCommand.execute (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:24147:27) at async PrepareCommand.validateAndExecute (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:21173:22) at async _Cli.run (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:22148:18) at async Object.runMain (/usr/local/lib/node_modules/corepack/dist/lib/corepack.cjs:24266:12)

Worked fine with node image: node:iron@sha256:894c91653e564b9ba29400e6e1675bbcbc667158c1706c655dd4ccf84d0f54e8

Start by reproducing the failure with the cited node:iron image digest, the https_proxy setting, and corepack prepare --activate && corepack enable. Inspect the failing request path in corepack/dist/lib/corepack.cjs and compare it with the older working image digest. Done means pnpm@8.15.6 can be prepared successfully through the proxy without the internal error.