Document the lack of localization remapping support in VideoPlayer

See #43917.

(cherry picked from commit 1636fb8856759495aaeb156517d9a4cd2a33b967)

doc/classes/VideoPlayer.xml

@@ -6,6 +6,7 @@
 	<description>
 		Control node for playing video streams using [VideoStream] resources.
 		Supported video formats are [url=https://www.webmproject.org/]WebM[/url] ([code].webm[/code], [VideoStreamWebm]), [url=https://www.theora.org/]Ogg Theora[/url] ([code].ogv[/code], [VideoStreamTheora]), and any format exposed via a GDNative plugin using [VideoStreamGDNative].
+		[b]Note:[/b] Due to a bug, VideoPlayer does not support localization remapping yet.
 	</description>
 	<tutorials>
 	</tutorials>