Revert "[framework] Compile secondary dex files in isolation"

This reverts commit 8a5a708d.
ART does not compile secondary dex files in the user process
any more. The original issue of a large overhead of providing
a class loader context is therefore not relevant any more and
we can start passing the context to installd.

Note that this also partially reverts commit
6dba50d6 which restricted
visibility of methods in PackageDexUsage. The commit also
removed data collection for unsupported class loaders. The
logic in PackageDexOptimizer was adjusted accordingly.

Bug: 64530081
Bug: 111174995
Test: manual
Change-Id: Id78b5a6d8841b199c12a63a8d45d12efbcc32275