API: Fix missing @NonNull annotations

In pi-dev, those annotations were added out of band in
tools/metalava/manual/master.txt. The annotations were also
supposed to be added to master, but for some this did not happen.

Bug: 123221743
Test: m api-stubs-docs-check-last-released-api
Change-Id: Ia7589dfcc7f63923890e609dbf03175d2b035d29