RFR: 8267505: {List, Set, Map}PropertyBase::bind should check against identity

[Kevin Rushforth]

On Mon, 24 May 2021 11:56:35 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

> ListPropertyBase::bind, SetPropertyBase::bind, MapPropertyBase::bind have a check on whether a different instance of the observable is the same, and this PR changes that to check against identity.
> 
> Tests are included.

Marked as reviewed by kcr (Lead).

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PR: https://git.openjdk.java.net/jfx/pull/516