Avoid deprecated TS node10 moduleResolution defaults (#91847)
TypeScript 6 treats `moduleResolution: "node"` as deprecated (`node10`)
and can fail builds with `TS5107`.
This update keeps Next.js tsconfig defaults compatible with modern
TypeScript by preferring `moduleResolution: "bundler"` for modern module
modes, while preserving `"node"` for `commonjs`/`amd` configs where
`bundler` is invalid.
Also updates the related tests/snapshots to match the new defaults.
