RFR: 8354797: Parent.needsLayoutProperty() should return read-only getter

[Michael Strauß]

On Wed, 16 Apr 2025 08:59:55 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

> `Parent.needsLayout` is implemented with a `ReadOnlyBooleanWrapper`. The property getter returns the wrapper itself, but what it should be doing is return the read-only getter instead.
> 
> A single reviewer should be sufficient.

Seeing as this is a trivial change that has been reviewed by three Reviewers, I'm integrating this PR early because I need this patch for my other PR #1781 (both PRs target the same code, and this will need to go in first to resolve a merge conflict).

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PR Comment: https://git.openjdk.org/jfx/pull/1780#issuecomment-2810390234