RFR: 8245183: Two fxml unit tests log warnings about deprecated escape sequences

[Ambarish Rapte]

On Wed, 20 May 2020 06:24:32 GMT, Ajit Ghaisas <aghaisas at openjdk.org> wrote:

> Issue : https://bugs.openjdk.java.net/browse/JDK-8245183
> Fix : Added a message to the test saying these are expected warnings. Refer JBS comments for more details.

Marked as reviewed by arapte (Reviewer).

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PR: https://git.openjdk.java.net/jfx/pull/225