Support pnpm without shamefully-hoist

Is your feature request related to a problem? Please describe.

It would be nice if NativeScript worked with pnpm without --shamefully-hoist, as that flag disables the isolation and strictness of packages that pnpm otherwise grants, and makes NativeScript incompatible with pnpm workspaces as it likely assumes on where the hoisting happens and workspaces generally don't use or want to use that flag.

Describe the solution you'd like

Support pnpm without --shamefully-hoist.

Describe alternatives you've considered

Give up and use it with the flag outside a pnpm workspace, wiring the internal packages some other way.

Anything else?

shamefully-hoist = true can be included in a project level .npmrc for users running pnpm install directly so they don't have to remember including that. It can also be generated by the CLI when using pnpm or suggested to be added by it if it is missing.

Please accept these terms

• I have searched the existing issues as well as StackOverflow and this has not been posted before
• I agree to follow this project's Code of Conduct

The issue names no files, tests, or entry points. Start by tracing the CLI's package-manager and workspace installation handling, then identify where assumptions about hoisting are made. Done means NativeScript works in a pnpm workspace without requiring --shamefully-hoist while retaining pnpm's package isolation.