Cherry-pick upgrade to Scala.js 1.9.0 in the scalatest CB project.

sjrd · sjrd · commit bac43a72e5c4 · 2025-04-23T10:18:35.000+02:00
That is the commit that removed calls to `withStrictFloats(true)`,
which have been the default since 1.9.0, and cannot be changed
since 1.19.0.
diff --git a/community-build/community-projects/scalatest b/community-build/community-projects/scalatest
@@ -1 +1 @@
-Subproject commit d6eeedbfc1e04f2eff55506f07f93f448cc21407
+Subproject commit ab674686d089f13da2e29c3b78fe6c3ab0211189
