Fix SearchWithRandomIOExceptionsIT tripping assertion in RefreshFieldHasValueListener

We're in some cases tripping an assertion (`assertSearcherIsWarmedUp`) when we run the logic and no refresh actually happened
because of induced exceptions.
This really should only run if the refresh actually went through in any case.

fixes elastic#106752

Author: original-brownbear

server/src/main/java/org/elasticsearch/index/shard/IndexShard.java

@@ -4003,7 +4003,7 @@ public void beforeRefresh() {}
 
         @Override
         public void afterRefresh(boolean didRefresh) {
-            if (enableFieldHasValue) {
+            if (enableFieldHasValue && didRefresh) {
                 try (Engine.Searcher hasValueSearcher = getEngine().acquireSearcher("field_has_value")) {
                     setFieldInfos(FieldInfos.getMergedFieldInfos(hasValueSearcher.getIndexReader()));
                 } catch (AlreadyClosedException ignore) {