Don't use an asserting searcher at all in MatchingDirectoryReader (#1…

…00668) (#100685)

Follow up to #100527

We are not testing anything to do with searching with this searcher, and so
there is no point in using LuceneTestCase.newSearcher() which will wrap
it with all sorts of extra checks that may access the underlying reader in
ways that are not anticipated by tests.

Fixes #100460
Fixes #99024

test/framework/src/main/java/org/elasticsearch/index/engine/EngineTestCase.java

@@ -1513,7 +1513,7 @@ public MatchingDirectoryReader(DirectoryReader in, Query query) throws IOExcepti
                 @Override
                 public LeafReader wrap(LeafReader leaf) {
                     try {
-                        final IndexSearcher searcher = newSearcher(leaf, false, true, false);
+                        final IndexSearcher searcher = new IndexSearcher(leaf);
                         searcher.setQueryCache(null);
                         final Weight weight = searcher.createWeight(query, ScoreMode.COMPLETE_NO_SCORES, 1.0f);
                         final Scorer scorer = weight.scorer(leaf.getContext());