Return all nodes since pagination is external

Regression introduced when moved to newer
GraphQL pagination classes

changelogs/unreleased/216851-graphql-externallypaginatedarrayconnection-can-return-incorrect-nu.yml

+---
+title: Fix incorrect number of errors returned when querying sentry errors
+merge_request: 31252
+author:
+type: fixed

lib/gitlab/graphql/pagination/externally_paginated_array_connection.rb

@@ -23,6 +23,20 @@ module Gitlab
 
         alias_method :has_next_page, :next_page?
         alias_method :has_previous_page, :previous_page?
+
+        private
+
+        def load_nodes
+          @nodes ||= begin
+            # As the pagination happens externally we just grab all the nodes
+            limited_nodes = items
+
+            limited_nodes = limited_nodes.first(first) if first
+            limited_nodes = limited_nodes.last(last) if last
+
+            limited_nodes
+          end
+        end
       end
     end
   end

spec/lib/gitlab/graphql/pagination/externally_paginated_array_connection_spec.rb

@@ -19,6 +19,20 @@ describe Gitlab::Graphql::Pagination::ExternallyPaginatedArrayConnection do
     it_behaves_like 'connection with paged nodes' do
       let(:paged_nodes_size) { values.size }
     end
+
+    context 'when after or before is specified, they are ignored' do
+      # after and before are not used to filter the array, as they
+      # were already used to directly fetch the external array
+      it_behaves_like 'connection with paged nodes' do
+        let(:arguments) { { after: next_cursor } }
+        let(:paged_nodes_size) { values.size }
+      end
+
+      it_behaves_like 'connection with paged nodes' do
+        let(:arguments) { { before: prev_cursor } }
+        let(:paged_nodes_size) { values.size }
+      end
+    end
   end
 
   describe '#start_cursor' do