fix(@angular/cli): copy packageManager field and yarn config for temp installs#33551
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This pull request enhances the package manager utility to support copying and sanitizing Yarn configuration files (.yarnrc.yml and .yarnrc.yaml) during temporary package installations. It strips out fields like yarnPath, plugins, and nodeLinker to prevent issues, and appends nodeLinker: node-modules. Additionally, it copies the project's packageManager field to the temporary package.json to ensure Corepack resolves the correct version. Feedback is provided to improve the robustness of the Yarn configuration sanitizer by ensuring only top-level keys (with zero indentation) are stripped, preventing accidental removal of nested properties.
… installs When installing a temporary CLI package during update command execution, the active packageManager field value is copied from the project to the temporary package.json to establish a local version boundary for Corepack and prevent upward directory traversal. Additionally, configuration copying is enabled for Yarn to copy project-level .yarnrc.yml/.yarnrc.yaml files so custom registries and credentials are preserved.
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When installing a temporary CLI package during update command execution, the active packageManager field value is copied from the project to the temporary package.json to establish a local version boundary for Corepack and prevent upward directory traversal.
Additionally, configuration copying is enabled for Yarn to copy project-level .yarnrc.yml/.yarnrc.yaml files so custom registries and credentials are preserved.