Three new rules. `android.icu` may be named only under `data/zones/`, so the
platform's name database stays behind its seam. `MaterialShapes` and
`androidx.graphics.shapes` may be named only under `ui/worldclock/`, so the
showpiece stays the one place that morphs. And nothing under `domain/` or
`ui/` may read `ZoneId.systemDefault()` or `TimeZone.getDefault()` — the
device's zone is an argument, or the tests cannot pin a single one.
All three hold retroactively for M0 through M7.