Revert removal of hidden sendIntent method

While the method is not used in the system, one CTS test uses the
method, and therefore it cannot be removed even so it is an internal
API.

Also updates PackageArchiverTest to use fixed types, as the reintroduced hidden
and the public API have the same number of parameters and compilations
fails passing in only generic types.

Test: atest PackageManagerTest
Bug: 354597253
Flag: EXEMPT bugfix
Change-Id: I5c76136c159b2899e9f94e4587b38d07fbf6ca77