Bug 1541526 [wpt PR 16050] - Rewrite lengths-1.html, a=testonly

Automatic update from web-platform-tests
Rewrite lengths-1.html (#16050)

Unitless nonzero values were deprecated:
6e821b2c9c
--

wpt-commits: be1faa0a6f3da3028ae31769f5730df0e313021f
wpt-pr: 16050

testing/web-platform/tests/mathml/relations/css-styling/lengths-1.html

@@ -68,9 +68,9 @@
       <span style="top: 160px"><math><mstyle mathsize="2000%"><mspace width="1em"/></mstyle></math></span>
       <span style="top: 170px; width: 200px"></span>
 
-      <!-- unitless -->
+      <!-- unitless nonzero values should be ignored -->
       <span style="top: 180px"><math><mstyle mathsize="20.0"><mspace width="1em"/></mstyle></math></span>
-      <span style="top: 190px; width: 200px"></span>
+      <span style="top: 190px; width: 10px"></span>
     </div>
 
     <div id="green" style="position: absolute; width: 200px; height: 200px;">
@@ -110,9 +110,9 @@
       <span style="top: 170px"><math><mstyle mathsize="2000%"><mspace width="1em"/></mstyle></math></span>
       <span style="top: 160px; width: 200px"></span>
 
-      <!-- unitless -->
+      <!-- unitless nonzero values should be ignored -->
       <span style="top: 190px"><math><mstyle mathsize="20.0"><mspace width="1em"/></mstyle></math></span>
-      <span style="top: 180px; width: 200px"></span>
+      <span style="top: 180px; width: 10px"></span>
     </div>
   </div>
 </body>