Build fails with `composite: true` in `tsconfig.json`

[chubei-urus]

I'm not sure if this is as designed or a bug. Any help is appreciated!

I have a npm workspace that uses TypeScript. All the packages have composite: true so they can be consumed by other packages using TypeScript references.
When I try to use ncc to build one of the packages. the building fails. It succeeds if I set composite to false.

See the reproduction example in https://github.com/chubei-urus/ncc-demo.

[JJordan0C]

I opened #1337 to address this.

The failure comes from composite changing TypeScript's implicit rootDir to the app tsconfig directory, while ncc bundles the app and referenced sibling sources as one compilation. The PR disables composite only in ncc's internal compiler options, leaves the user tsconfig untouched, and adds a regression test matching the reported app/lib workspace.

The build, full test suite (119 tests), and coverage check pass locally.