Avoid LazyReattachIfAttached in SetIsInTopLayer().

Use SetForceReattachLayoutTree() instead.

Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I47811d822eafeac54fecc6aaecc275ce0c0e4954
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1541792Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#645329}

third_party/blink/renderer/core/dom/element.cc

@@ -4596,7 +4596,7 @@ void Element::SetIsInTopLayer(bool in_top_layer) {
   if (!isConnected())
     return;
   if (!GetDocument().InStyleRecalc())
-    LazyReattachIfAttached();
+    SetForceReattachLayoutTree();
 }
 
 void Element::requestPointerLock() {