Prevent default use of framework module implementation

Prevent dependencies that do not specify an sdk_version from accessing
the implementation library of a framework module by default and force
them to use stubs instead.

Bug: 155164730
Test: m nothing
Merged-In: Ib60e538a4017857eefa3465e56745c00306887e1
Change-Id: Ib60e538a4017857eefa3465e56745c00306887e1