Discrepancy in Search Results with spanNearQuery

### Description

Hello,
I'm contacting you to confirm a discrepancy I've found while using SpanNearQuery.

1. When searching for "applepie bananapie", it doesn't find results in files indexed as "apple pie banana pie"
2. When analyzing "applepie bananapie":
apple:PositionIncrementAttribute.setPositionIncrement(1)
pie:PositionIncrementAttribute.setPositionIncrement(0)
banana:PositionIncrementAttribute.setPositionIncrement(1)
pie:PositionIncrementAttribute.setPositionIncrement(0)
Then searching with inorder spanNear(apple, pie, banana, pie)
3. Expected normal search results for all values below the default of 21
4. No results output
5. Debugging results show:

```
@Override public int endPosition() {
return (position == -1) ? -1 : (position != NO_MORE_POSITIONS) ? position + 1 : NO_MORE_POSITIONS;
}
```
The search stops due to position + 1, resulting in no search results

I'm wondering if there's a special reason for including position + 1. If not, it seems it would be better to remove the "+1" part.

Start by reproducing the reported SpanNearQuery search for "applepie bananapie" against indexed text "apple pie banana pie" and inspect the shown endPosition() implementation. Determine whether position + 1 causes the missing matches, then add regression coverage demonstrating the expected results for the reported span query.

Written by the indexing model from the issue text.