QueryValue Objects are missing @Format

### Expected Behavior

Given:
```
parameters:
filter:
name: filter
required: true
in: query
style: form
schema:
type: object
properties:
myProp:
type: "string"
```

Generaetd Route:

```
...
suspend fun get(
@QueryValue("filter") filter: GetFilterParameter,
): ...
```
Its missing for MULTI format: `@Format(FORMAT_MULTI)`

The generate only addds this annotation for maps/arrays/ and such but not objects.

### Actual Behaviour

_No response_

### Steps To Reproduce

_No response_

### Environment Information

_No response_

### Example Application

_No response_

### Version

5.0.0

Start by locating the query-parameter annotation generation path and compare how maps and arrays receive FORMAT_MULTI with how object schemas are handled. Reproduce the issue from the provided OpenAPI parameter and verify that the generated Kotlin route includes @Format(FORMAT_MULTI) for the object query value.

Written by the indexing model from the issue text.