Publicize constructors of accessibility related infomational classes

This is the first step of eliminating SynchronizedPool for a11y ojbects.
The patch doesn't stop recycling, but allows service developers to
choose whether or not to.

Since recycling a11y node info is stopped in the cache, but the nodes
are still holding pooled collection/item/range info objects. Here it
goes away with public constructors except those refreshed one.

Bug: 117999988
Test: m update-api; m checkapi; m ds-docs
Test: atest --test-mapping $ANDROID_BUILD_TOP/frameworks/base/core/java/android/view/accessibility:postsubmit

Change-Id: I12304662f216b5e443785939f231893abdfa07d5