Use nativePostForkSystemServer for system server profiling

Need to use nativePostForkSystemServer instead of nativePostForkChild
since nativePostForkChild is called after the class loader is created.

(cherry-picked from commit 0712f2969c0f19fa2cc41f99751d39ee1852ebbc)
Bug: 139883463
Bug: 144383344
Test: showmap `pid system_server` and verify
Test: atest BootImageProfileTest

Merged-In: I7c4f61b08d286ef6056931231f6b835749092720
Change-Id: I7c4f61b08d286ef6056931231f6b835749092720
2 files changed