[Skymeld] Make the test for unused action conflict explicitly opt out of Skymeld.

PiperOrigin-RevId: 530234584
Change-Id: I97fc24b8cb4b23551f7167409a82098e1e29d446

Author: joeleba

src/test/java/com/google/devtools/build/lib/buildtool/OutputArtifactConflictTest.java

@@ -490,6 +490,8 @@ public void testConflictErrorAndUnfinishedAspectAnalysis_mergedAnalysisExecution
   // aren't run would exhibit this behavior.
   @Test
   public void unusedActionsStillConflict() throws Exception {
+    // TODO(b/245923465) Limitation with Skymeld.
+    addOptions("--noexperimental_merged_skyframe_analysis_execution");
     write(
         "foo/aspect.bzl",
         "def _aspect1_impl(target, ctx):",