Filter Nested Collection RSQL-JPA Extend - spring-data-jpa

Question

I ask one simple solution and want to extend it with some functionalities.
Here is my shorter question: Filter an empty collection
The question now is how to extend this RSQL query without extra efford of second request?
Data Model:
{
"test":[
{
"id":"252355",
"deleted":false,
"properties":[
{
"id":"sgdegegwe",
"deleted":false
},
{
"id":"aaaaa",
"deleted":true
}
]
},
{
"id":"252555",
"deleted":false,
"properties":[
]
}
]
}
The Result should be
{
"test":[
{
"id":"252355",
"deleted":false,
"properties":[
{
"id":"sgdegegwe",
"deleted":false
}
]
},
{
"id":"252555",
"deleted":false,
"properties":[
]
}
]
}
My solution so far is to to get a result for the first test entity is to rewrite the query and ask at properties endpoint with linking to test-id. But dont get the result I want, so I ask the linked question at first and now how to combine and simplify request.
I want to use RSQL because there should be also an option to see all properties, with
properties.deleted=in=(true,false)