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
"retryable": true,
                                "disable_state_persistence": true,
                                "levels": [
                                  "read",
                                  "write",
                                  "metadata_read",
                                  "metadata_write"
                                ]
                              }
                            },
                            "indices": {
                              "index": {
                                "2": {
                                  "description": "description2",
                                  "retryable": false,
                                  "levels": [
                                    "read",
                                    "write",
                                    "metadata_read",
                                    "metadata_write"
                                  ]
                                }
                              }
                            }
                          },
                          "nodes": {
                            "nodeId1": {
                              "name": "",
                              "ephemeral_id": "%s",
                              "transport_address": "127.0.0.1:111",