Mark block-ellipsis-015 as tentative again

Pending <wbr> being fully standardized.

Author: frivoal

…rflow/line-clamp/block-ellipsis-015.html …-clamp/block-ellipsis-015.tentative.htmlcss/css-overflow/line-clamp/block-ellipsis-015.html renamed to css/css-overflow/line-clamp/block-ellipsis-015.tentative.html css/css-overflow/line-clamp/block-ellipsis-015.html renamed to css/css-overflow/line-clamp/block-ellipsis-015.tentative.html

@@ -6,6 +6,10 @@
 <link rel="help" href="https://drafts.csswg.org/css-overflow-4/#block-ellipsis">
 <link rel="match" href="reference/block-ellipsis-013-ref.html">
 <meta name="assert" content="The block-ellipsis is not placed after the last soft wrap opportunity in a line box with text-wrap: nowrap.">
+<!--
+  Marked as tentative because the behavior of wbr is not fully standard/interoperable yet.
+  See Comment in https://github.com/web-platform-tests/wpt/pull/54917#discussion_r2357640047
+-->
 <style>
 .clamp {
   line-clamp: 2;