ESQL: Disable remote enrich verification (elastic#118534)

This disables verifying the plans generated for remote ENRICHing.
It also re-enables corresponding failing test.

Related: elastic#118531
Fixes elastic#118307.

Author: bpintea

muted-tests.yml

@@ -276,9 +276,6 @@ tests:
 - class: org.elasticsearch.action.search.SearchQueryThenFetchAsyncActionTests
   method: testBottomFieldSort
   issue: https://github.com/elastic/elasticsearch/issues/118214
-- class: org.elasticsearch.xpack.esql.action.CrossClustersEnrichIT
-  method: testTopNThenEnrichRemote
-  issue: https://github.com/elastic/elasticsearch/issues/118307
 - class: org.elasticsearch.xpack.remotecluster.CrossClusterEsqlRCS1UnavailableRemotesIT
   method: testEsqlRcs1UnavailableRemoteScenarios
   issue: https://github.com/elastic/elasticsearch/issues/118350

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/optimizer/PhysicalVerifier.java

@@ -12,7 +12,9 @@
 import org.elasticsearch.xpack.esql.core.expression.Attribute;
 import org.elasticsearch.xpack.esql.core.expression.Expressions;
 import org.elasticsearch.xpack.esql.optimizer.rules.PlanConsistencyChecker;
+import org.elasticsearch.xpack.esql.plan.logical.Enrich;
 import org.elasticsearch.xpack.esql.plan.physical.AggregateExec;
+import org.elasticsearch.xpack.esql.plan.physical.EnrichExec;
 import org.elasticsearch.xpack.esql.plan.physical.FieldExtractExec;
 import org.elasticsearch.xpack.esql.plan.physical.PhysicalPlan;
 
@@ -35,6 +37,12 @@ public Collection<Failure> verify(PhysicalPlan plan) {
         Set<Failure> failures = new LinkedHashSet<>();
         Failures depFailures = new Failures();
 
+        // AwaitsFix https://github.com/elastic/elasticsearch/issues/118531
+        var enriches = plan.collectFirstChildren(EnrichExec.class::isInstance);
+        if (enriches.isEmpty() == false && ((EnrichExec) enriches.get(0)).mode() == Enrich.Mode.REMOTE) {
+            return failures;
+        }
+
         plan.forEachDown(p -> {
             if (p instanceof AggregateExec agg) {
                 var exclude = Expressions.references(agg.ordinalAttributes());