Deprecate `MapperBuilder.serializationInclusion()` (to align with `ObjectMapper`, prep for 3.0)

[cowtowncoder]

While ObjectMapper.setSerializationInclusion() was deprecated a while ago (in 2.0) -- to be replaced with ObjectMapper.setDefaultPropertyInclusion() -- MapperBuilder.serializationInclusion() was not similarly deprecated. Since this method has replacement (MapperBuilder.defaultPropertyInclusion()) -- and since methods are removed from 3.0, let's mark this method as deprecated
.

[cowtowncoder]

Note: change committed earlier, included in 2.20.0: cb45537 .

Also see #5294 for follow-up discussion.