KTOR-8507: Exclude a parent from query params when it is an object (#4760)

Author: MarcusDunn

ktor-shared/ktor-resources/common/src/io/ktor/resources/serialization/ResourcesFormat.kt

@@ -84,7 +84,7 @@ public class ResourcesFormat(
             val elementDescriptor = descriptor.getElementDescriptor(index)
             if (!elementDescriptor.isInline && elementDescriptor.kind is StructureKind.CLASS) {
                 collectAllParameters(elementDescriptor, result)
-            } else {
+            } else if (elementDescriptor.kind !is StructureKind.OBJECT) {
                 result.add(Parameter(name, descriptor.isElementOptional(index)))
             }
         }

ktor-shared/ktor-resources/common/test/io/ktor/tests/resources/ParametersSerializationTest.kt

@@ -5,6 +5,7 @@
 package io.ktor.tests.resources
 
 import io.ktor.http.*
+import io.ktor.resources.Resource
 import io.ktor.resources.serialization.*
 import kotlinx.serialization.*
 import kotlin.test.*
@@ -174,4 +175,15 @@ class ParametersSerializationTest {
         assertEquals("c", encoded["charValue"])
         assertEquals("value", encoded["stringValue"])
     }
+
+    @Resource("v1")
+    private data object V1 {
+        @Resource("api")
+        data class Api(val parent: V1)
+    }
+
+    @Test
+    fun testQueryParamsDoNotContainsObjectParent() {
+        assertEquals(emptySet(), resourcesFormat.encodeToQueryParameters(serializer = serializer<V1.Api>()))
+    }
 }