RFR: 8273998: Clarify specification for Window properties controlled by the window manager

[Ajit Ghaisas]

On Fri, 7 Jan 2022 18:19:23 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Update the API specification for the `Window` and `Stage` classes to clarify that the values for some properties and methods can be changed or ignored by the platform. Several of the properties already have a comment to the effect that the value can change externally, and thus the properties are not bindable, but this should be clarified further and for all such properties and methods.
> 
> See the Description of the JBS issues for this bug and its associated CSR for more details.

Marked as reviewed by aghaisas (Reviewer).

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PR: https://git.openjdk.java.net/jfx/pull/708