refactor: extract constraints -> extractedConstraints (#20484)

...ules/manager/npm/extract/__snapshots__/index.spec.ts.snap

lib/modules/manager/npm/extract/index.spec.ts

lib/modules/manager/npm/extract/index.ts

lib/modules/manager/npm/extract/locked-versions.spec.ts

lib/modules/manager/npm/extract/locked-versions.ts

lib/modules/manager/npm/extract/monorepo.spec.ts

lib/modules/manager/npm/extract/monorepo.ts

...modules/manager/pipenv/__snapshots__/extract.spec.ts.snap

lib/modules/manager/pipenv/extract.spec.ts

lib/modules/manager/pipenv/extract.ts

lib/modules/manager/types.ts