An existed query parameter was removed incorrectly from the resolved output swagger

The resolved swagger file would remove an existed query parameter in correctly when added a new query parameter to the swagger.

Command to run:
```
autorest --v2 --input-file=Microsoft.BlobStorage/stable/2026-12-06/blob.json --output-artifact=swagger-document.json --output-artifact=swagger-document.map --output-file=new --output-folder=/tmp/oad-pmOeuJ
```

Here is a [test commit](https://github.com/raych1/azure-rest-api-specs/pull/121/commits/425d6d3bb184956fc8e1ed74104b6bfb61b7b45a) which added a new query parameter then ended up removing an existed query parameter in the resolved swagger (showed in the screenshot below).

Run the provided autorest command against Microsoft.BlobStorage/stable/2026-12-06/blob.json and compare the resolved swagger output. Read the linked test commit to identify the newly added query parameter and the existing parameter it removes; done means the resolved output preserves both parameters.

Written by the indexing model from the issue text.