Exception raised when using FixedShingleFilter with WordDelimiterGraphFilter

### Description

Hi, I'd like to report an issue using `FixedShingleFilter` with `WordDelimiterGraphFilter`. An exception is raised on the following conditions.
* Tokenizer produces 1 token
* WordDelimiterGraphFilter produces multiple tokens
* FixedShingleFliter used

I ran into the issue when using Elasticsearch's [search_as_you_type](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-as-you-type.html) which uses FixedShingleFilter.
```
Exception in thread "main" java.lang.IllegalArgumentException: first position increment must be > 0 (got 0) for field 'contents'
at org.apache.lucene.index.IndexingChain$PerField.invertTokenStream(IndexingChain.java:1232)
at org.apache.lucene.index.IndexingChain$PerField.invert(IndexingChain.java:1196)
at org.apache.lucene.index.IndexingChain.processField(IndexingChain.java:741)
at org.apache.lucene.index.IndexingChain.processDocument(IndexingChain.java:618)
at org.apache.lucene.index.DocumentsWriterPerThread.updateDocuments(DocumentsWriterPerThread.java:274)
at org.apache.lucene.index.DocumentsWriter.updateDocuments(DocumentsWriter.java:425)
at org.apache.lucene.index.IndexWriter.updateDocuments(IndexWriter.java:1552)
at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1837)
at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1477)
at org.apache.lucene.demo.IndexFiles.indexDoc(IndexFiles.java:283)
at org.apache.lucene.demo.IndexFiles.indexDocs(IndexFiles.java:234)
at org.apache.lucene.demo.IndexFiles.main(IndexFiles.java:167)
```

This is the change to IndexFiles.java that can trigger the exception, tested on c20e09e62f4.
```
diff --git a/lucene/demo/src/java/org/apache/lucene/demo/IndexFiles.java b/lucene/demo/src/java/org/apache/lucene/demo/IndexFiles.java
index dca01f61254..e39f6e440d4 100644
--- a/lucene/demo/src/java/org/apache/lucene/demo/IndexFiles.java
+++ b/lucene/demo/src/java/org/apache/lucene/demo/IndexFiles.java
@@ -30,7 +30,11 @@ import java.nio.file.attribute.BasicFileAttributes;
import java.util.Date;
import java.util.Objects;
import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.standard.StandardAnalyzer;
+import org.apache.lucene.analysis.core.FlattenGraphFilterFactory;
+import org.apache.lucene.analysis.custom.CustomAnalyzer;
+import org.apache.lucene.analysis.miscellaneous.WordDelimiterGraphFilterFactory;
+import org.apache.lucene.analysis.shingle.FixedShingleFilterFactory;
+import org.apache.lucene.analysis.standard.StandardTokenizerFactory;
import org.apache.lucene.demo.knn.DemoEmbeddings;
import org.apache.lucene.demo.knn.KnnVectorDict;
import org.apache.lucene.document.Document;
@@ -126,7 +130,12 @@ public class IndexFiles implements AutoCloseable {
System.out.println("Indexing to directory '" + indexPath + "'...");

Directory dir = FSDirectory.open(Paths.get(indexPath));
- Analyzer analyzer = new StandardAnalyzer();
+ Analyzer analyzer = CustomAnalyzer.builder()
+ .withTokenizer(StandardTokenizerFactory.NAME)
+ .addTokenFilter(WordDelimiterGraphFilterFactory.NAME, "catenateNumbers", "1")
+ .addTokenFilter(FlattenGraphFilterFactory.NAME)
+ .addTokenFilter(FixedShingleFilterFactory.NAME)
+ .build();
IndexWriterConfig iwc = new IndexWriterConfig(analyzer);

if (create) {
```

Testing data:
I have a file with the following content and then the file is fed to IndexFiles.
```
555,0
```

### Version and environment details

tested on c20e09e62f4

Start in lucene/demo/src/java/org/apache/lucene/demo/IndexFiles.java and reproduce the failure with the CustomAnalyzer chain using the provided 555,0 input. Read FixedShingleFilter, WordDelimiterGraphFilter, and FlattenGraphFilter behavior around token positions, then verify that indexing the example no longer raises the reported IllegalArgumentException.

Written by the indexing model from the issue text.