PHPLIB-912: showExpandedEvents test fix for spurious mongos failures

Reverts previous skip added in a35e09e

Synced with mongodb/specifications@5174162

Author: jmikola

tests/UnifiedSpecTests/UnifiedSpecTest.php

@@ -64,8 +64,6 @@ class UnifiedSpecTest extends FunctionalTestCase
         'valid-pass/createEntities-operation: createEntities operation' => 'CSOT is not yet implemented (PHPC-1760)',
         'valid-pass/entity-cursor-iterateOnce: iterateOnce' => 'CSOT is not yet implemented (PHPC-1760)',
         'valid-pass/matches-lte-operator: special lte matching operator' => 'CSOT is not yet implemented (PHPC-1760)',
-        // Fails on sharded clusters
-        'change-streams/change-streams-showExpandedEvents: when showExpandedEvents is true, createIndex events are reported' => 'Fails on sharded clusters (PHPLIB-912)',
     ];
 
     /** @var UnifiedTestRunner */

tests/UnifiedSpecTests/change-streams/change-streams-showExpandedEvents.json

@@ -275,7 +275,15 @@
           "name": "createChangeStream",
           "object": "collection0",
           "arguments": {
-            "pipeline": [],
+            "pipeline": [
+              {
+                "$match": {
+                  "operationType": {
+                    "$ne": "create"
+                  }
+                }
+              }
+            ],
             "showExpandedEvents": true
           },
           "saveResultAsEntity": "changeStream0"