### Elasticsearch Version

master

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

all

### Problem Description

TimeSeriesIndexSearcher use the tsidOrd to speed up tsid compare. There is a hidden bug:
The init value of tsidOrd is 0, so it's ok to collect data from beginning. But if collect data from the middle, the tsidOrd has a wrong init value. It will cause the PriorityQueue pop the wrong LeafWalker.

### Steps to Reproduce

Create 2 segments IndexWriter, And the first segment is:
|_tsid|@timestamp|
|  ----  | ----  |
|tsid1|1|
|tsid2|11|
|tsid2|10|
|tsid3|1|

 the second segment is:
|_tsid|timestamp|
|  ----  | ----  |
|tsid1|1|
|tsid2|21|
|tsid2|20|
|tsid3|1|

the query is _tsid : tsid2 OR _tsid : tsid3
the current order is : tsid2/21 -> tsid2/11 -> tsid2/20 -> tsid2/10 -> tsid3/1  -> tsid3/1.
The right order is :  tsid2/21 -> tsid2/20 -> tsid2/11 -> tsid2/10 -> tsid3/1  -> tsid3/1.
The reason is in
```
        boolean shouldPop() throws IOException {
            if (tsidOrd == -1) {
                tsidOrd = tsids.ordValue();
            } else if (tsidOrd != tsids.ordValue()) {
                tsidOrd = tsids.ordValue();
                return true;
            }
            return false;
        }
```
the tsidOrd init value is 0, But the first tsidOrd value of this query is 1. So It pop the second segment unexpected.

### Logs (if relevant)

_No response_
server/src/test/java/org/elasticsearch/search/aggregations/timeseries/TimeSeriesIndexSearcherTests.java
currentTimestamp + "->" + latestTimestamp,
                                    timestampReverse ? latestTimestamp <= currentTimestamp : latestTimestamp >= currentTimestamp
                                );
                            }
                        }
                        currentTimestamp = latestTimestamp;
                        currentTSID = BytesRef.deepCopyOf(latestTSID);
                        total++;
                    }
                };
            }
            @Override
            public void preCollection() throws IOException {
            }
            @Override
            public void postCollection() throws IOException {
                assertEquals(2500, total);
            }
            @Override
            public ScoreMode scoreMode() {
                return ScoreMode.COMPLETE;
            }
        };
        indexSearcher.search(new MatchAllDocsQuery(), collector);
        collector.postCollection();
        reader.close();
        dir.close();
    }
}