RFR: 8274932: Render scales in EmbeddedWindow are not properly updated

[Andy Goryachev]

On Thu, 6 Jul 2023 13:10:44 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> When the JavaFX scene is set before it is really shown, then the scale factors are not properly propagated to the EmbeddedWindow, resulting in showing wrong scales.
> Fix is made to update scales to EmbeddedWindow

Appearance without the fix on the secondary is almost identical:

<img width="1642" alt="Screenshot 2023-07-07 at 09 23 48" src="https://github.com/openjdk/jfx/assets/107069028/ba482424-17f7-4b9f-98a8-7ff9df4e245c">

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PR Comment: https://git.openjdk.org/jfx/pull/1171#issuecomment-1625656133