Once https://github.com/elastic/elasticsearch/issues/98503 is done, we can use our minimum version numbers in the SystemIndexMappingUpdate service instead of the old `Version` types. Mappings will be updated for a system index when all nodes have a matching descriptor mappings version for a system index, but this version is greater than what's stored in the mappings metadata.
server/src/test/java/org/elasticsearch/cluster/ClusterStateTests.java
"hash" : 1
                                }
                              }
                            }
                          ],
                          "metadata": {
                            "cluster_uuid": "clusterUUID",
                            "cluster_uuid_committed": false,
                            "cluster_coordination": {
                              "term": 1,
                              "last_committed_config": [
                                "commitedConfigurationNodeId"
                              ],
                              "last_accepted_config": [
                                "acceptedConfigurationNodeId"
                              ],
                              "voting_config_exclusions": [
                                {
                                  "node_id": "exlucdedNodeId",
                                  "node_name": "excludedNodeName"
                                }
                              ]
                            },
                            "templates": {
                              "template": {
                                "order": 0,
                                "index_patterns": [
                                  "pattern1",
                                  "pattern2"
                                ],