On a Shadow state update with cleared shadow, the new values were not transmitted to the Java GraphicsDecoder
------------- Commit messages: - 8334124: Rendering issues with CSS "text-shadow" in WebView Changes: https://git.openjdk.org/jfx/pull/1547/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1547&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8334124 Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/1547.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1547/head:pull/1547 PR: https://git.openjdk.org/jfx/pull/1547
