imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19.html is missing styling in expected file

https://bugs.webkit.org/show_bug.cgi?id=296642
rdar://156717595

Reviewed by Eric Carlson.

imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19-expected.html
is missing
html { overflow:hidden }
body { margin:0 }
Which is causing the video to be positioned differently. All other webvtt rendering tests
Have this styling, so it should be added to this one as well.

* LayoutTests/TestExpectations:
* LayoutTests/imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19-expected.html:
* LayoutTests/imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19-ref.html:

Canonical link: https://commits.webkit.org/298011@main

Author: danae404

LayoutTests/TestExpectations

@@ -631,6 +631,7 @@ imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-mode
 imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/embedded_style_selectors.html [ Pass ]
 imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/embedded_style_urls.html [ Pass ]
 imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_404_omit_subtitles.html [ Pass ]
+imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19.html [ Pass ]
 
 # These WebVTT rendering WPT are flaky.
 imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/non-standard-pseudo-elements.html [ ImageOnlyFailure Pass Failure ]

LayoutTests/imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19-expected.html

@@ -2,6 +2,8 @@
 <title>Reference for WebVTT rendering, when media height is 19 or less, font size should be smaller than when it is 20 and above</title>
 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
 <style>
+html { overflow:hidden }
+body { margin:0 }
 .video {
     display: inline-block;
     width: 320px;

LayoutTests/imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/evil/media_height_19-ref.html

@@ -2,6 +2,8 @@
 <title>Reference for WebVTT rendering, when media height is 19 or less, font size should be smaller than when it is 20 and above</title>
 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
 <style>
+html { overflow:hidden }
+body { margin:0 }
 .video {
     display: inline-block;
     width: 320px;