[gcchecker] Don't bail out of analysis when calling a C++ constructor (#60654)
In 4f5606f36bb6178d4be7413ca94d17f894a42f4e, we stopped analyzing
CXXConstructExpr and CXXTemporaryObjectExpr calls, causing us to ignore
the GCChecker annotations on jl_unique_gcsafe_lock's constructor and
destructor.
We can handle these correctly, but some code will need to be updated to
fix the new GCChecker errors.