test: move side-effects-cache=false for pnpm

[MikeMcC399]

Issue

1. In order to disable the pnpm side effects cache, to prevent pnpm from skipping Cypress binary installation if the Cypress npm module is already cached, the Cypress documentation > pnpm Configuration now recommends using:

   pnpm config set side-effects-cache false --location project

   This uses ini-syntax and is compatible with pnpm 9.x and earlier 10.x versions. Later versions, such as pnpm@10.9.0 also accept this syntax and convert it into json-syntax using sideEffectsCache.

2. When the above command is executed on a empty pnpm@10.9.0 project it writes now to the file pnpm-workspace.yaml instead of to .npmrc.

3. The pnpm bookmark https://pnpm.io/npmrc#side-effects-cache no longer exists. It has been moved to https://pnpm.io/settings#sideeffectscache as part of https://pnpm.io/settings#build-settings.

Change

In the README.md > pnpm document section, link to https://on.cypress.io/install#pnpm-Configuration so that pnpm configuration instructions are not repeated and can be maintained in one place, on the Cypress documentation site for general use.

In

• examples/basic-pnpm
• examples/start-and-pnpm-workspaces

delete .npmrc and apply

pnpm config set side-effects-cache false --location project

to update the corresponding pnpm-workspace.yaml file with sideEffectsCache: false

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🎉 This PR is included in version 6.8.0 🎉

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