Revert^2 "Harden construction sites of android::StrongPointer."

This reverts commit f73db7a6.

Reason for revert: Scope restricted to sp<>::make which is a safe
replacement for assignment from new.

Bug: 393217449
Test: ChoreographerTests pass locally.
Flag: EXEMPT_refactor

Change-Id: I9a38c54c06cc64da099d282c05ccf20f40b70a72