Implement members: fix it works correctly if primary constructor has implemented member

#KT-37312 Fixed

idea/testData/quickfix/implement/hasImplementedInPrimaryConstructor3.kt

@@ -0,0 +1,13 @@
+// "Implement members" "true"
+// WITH_RUNTIME
+abstract class C {
+    abstract val p: String?
+    abstract val q: Int
+    abstract fun test()
+}
+
+<caret>class MyImpl3(
+    override val p: String? = null
+) : C() {
+    override val q: Int = 0
+}