Define height attribute for thead, tbody, and tfoot elements

Tests: web-platform-tests/wpt#17573.

Fixes #4718.

source

@@ -111475,6 +111475,10 @@ table {
   to the dimension property</span> <span>'width'</span> on the <code>col</code>
   element.</p>
 
+  <p>The <code>thead</code>, <code>tbody</code>, and <code>tfoot</code> elements' <code
+  data-x="attr-tbody-height">height</code> attribute <span>maps to the dimension property</span>
+  <span>'height'</span> on the element.</p>
+
   <p>The <code>tr</code> element's <code data-x="attr-tr-height">height</code> attribute <span>maps
   to the dimension property (ignoring zero)</span> <span>'height'</span> on the <code>tr</code>
   element.</p>
@@ -113880,6 +113884,7 @@ if (s = prompt('What is your name?')) {
    <dt><dfn><code data-x="attr-tbody-align">align</code></dfn> on <code>tbody</code>, <code>thead</code>, and <code>tfoot</code> elements</dt>
    <dt><dfn><code data-x="attr-tbody-char">char</code></dfn> on <code>tbody</code>, <code>thead</code>, and <code>tfoot</code> elements</dt>
    <dt><dfn><code data-x="attr-tbody-charoff">charoff</code></dfn> on <code>tbody</code>, <code>thead</code>, and <code>tfoot</code> elements</dt>
+   <dt><dfn><code data-x="attr-tbody-height">height</code></dfn> on <code>thead</code>, <code>tbody</code>, and <code>tfoot</code> elements</dt>
    <dt><dfn><code data-x="attr-tbody-vAlign">valign</code></dfn> on <code>tbody</code>, <code>thead</code>, and <code>tfoot</code> elements</dt>
    <dt><dfn><code data-x="attr-tdth-align">align</code></dfn> on <code>td</code> and <code>th</code> elements</dt>
    <dt><dfn><code data-x="attr-tdth-bgcolor">bgcolor</code></dfn> on <code>td</code> and <code>th</code> elements</dt>