can't use NO_PROXY env var if proxy is configured via .yarnrc

[cristiand391]

Describe the bug
can't use NO_PROXY env var when installing plugins if I set up proxy via yarn config.

plugin-plugins doesn't pass --no-default-rc flag to yarn when installing plugins so it will pick what's on ~/.yarnrc.
If I set the proxy address via yarn config set, then I can't use NO_PROXY due to a yarn v1 bug:
yarnpkg/yarn#5048

To Reproduce
Steps to reproduce the behavior:

1. Set https proxy (don't need to setup a local proxy, can point to localhost): yarn config set https-proxy "localhost:8888"
2. try installing a plugin but set NO_PROXY='registry.yarnpkg.com' so that it can reach the yarn registry

Expected behavior
NO_PROXY is respected.

Idea

plugin-plugins could pass --use-yarnrc to save a custom yarn config file that is savesd in the CLI data dir, that way users can still use the global yarn config file without being affected by CLI internals.
Also it should set --no-default-rc so that no global npmrc/yarnrc file is read.

Also tried using npm_config env vars to pass proxy settings and passing --no-default-rc to yarn but it didn't work.

Workarounds

1. only set proxy via env vars, no yarn/npm config.
2. follow this workaround: Yarn ignores no_proxy environment variable when proxy property set yarnpkg/yarn#5048 (comment)

Screenshots

1. no yarn/npm config vars, proxy env vars work fine:

NOTE: see second run with the typo in NO_PROXY env var, that shows HTTPS_PROXY is respected.

2. proxy set in .yarnrc file, install of plugin-org fails when using NO_PROXY (can't reach registry)

NOTE: in the screenshot I used the local sf CLI and removed plugin-trust to remove the preinstall hook (it does a request that fails b/c localhost:8888 doesn't exist).

3. with suggested workaround

Environment (please complete the following information):

• OS & version: macos sonoma
• Shell/terminal & version zsh/alacritty

Additional context
Reported in Salesforce CLI repo:
forcedotcom/cli#2540

[git2gus]

This issue has been linked to a new work item: W-14462904