RUBY-3103 Exclude create events from change stream events when testing showExpandedEvents (#2612)

Author: neilshweky

spec/spec_tests/data/change_streams_unified/change-streams-showExpandedEvents.yml

@@ -160,7 +160,15 @@ tests:
       - name: createChangeStream
         object: *collection0
         arguments:
-          pipeline: []
+          pipeline:
+            # On sharded clusters, the create command run when loading initial
+            # data sometimes is still reported in the change stream. To avoid
+            # this, we exclude the create command when creating the change
+            # stream, but specifically don't exclude other events to still catch
+            # driver errors.
+            - $match:
+                operationType:
+                  $ne: create
           showExpandedEvents: true
         saveResultAsEntity: &changeStream0 changeStream0
       - name: createIndex
@@ -259,9 +267,7 @@ tests:
         arguments:
           command:
             collMod: *collection0
-          # Added here to fix our tests as we require a commandName but don't
-          # do anything with it.
-          commandName: modify_collection
+          commandName: collMod
       - name: iterateUntilDocumentOrError
         object: *changeStream0
         expectResult:
@@ -292,6 +298,7 @@ tests:
             shardCollection: shardedDb.shardedCollection
             key:
               _id: 1
+          commandName: shardCollection
       - name: iterateUntilDocumentOrError
         object: *changeStream0
         expectResult: