Whitelist all @SystemApi and @TestApi for hidden API

We used to greylist @SystemApi and @TestApi individually, but we should
allow all of them to be used. Run Doclava in a separate pass to generate
a list of private APIs, assuming that @SystemApi and @TestApi override
the @hide annotation.

Bug: 64382372
Bug: 74346885
Test: check generated files
Change-Id: Ie3726a294a4fdeb03fc8888878b013c9ad5bd04b