Enforce exclusive release config component directories

Enforce this requirement for delivery to aosp:
- "A release config shall exist in at most one of build/release and
  vendor/google_shared/build/release".

Bug: 349843674
Bug: 370829778
Bug: 371026851
Test: manual, TH
Change-Id: Ie4bc8137f2bd10f3b90efcffe8d2c8e317dcc2fc