Incorrect Handling of Quoted Sorting Attributes in YQL sorting Parameter with yqlRepresentation()

[yuh701]

Describe the bug

When using the sorting parameter instead of order by in a YQL query such as
select * from hoge where huga;&sorting=-[rank],
specifying a value like [rank] that should be enclosed in quotes results in an error when calling yqlRepresentation().
Ideally, it should generate order by '[rank]' desc,
but it incorrectly generates order by [rank] desc without quotes.

Additional context

This issue occurs when using the sorting parameter in YQL queries. It appears that the handling of special sorting attributes like [rank] does not correctly apply quotes when generating the YQL representation.

[kkraune]

internal note: https://docs.vespa.ai/en/reference/sorting.html#special-sorting-attributes

[yuh701]

Thank you for your response. I have read the page you provided.
Additionally, I came across this issue: #26397. While it seems related, the situation I am facing is slightly different.

What I am trying to achieve is to use the sorting parameter with [relevance], without using order by. For example:

yql=select id,title from doc where userQuery()&query=sars&sorting=-[relevance]

This request works fine for searching purposes. However, when I attempt to convert it to YQL using yqlRepresentation(), it results in an error.
https://github.com/vespa-engine/vespa/blob/master/container-search/src/main/java/com/yahoo/search/Query.java#L720.