Support for generic classes in quickfix for NOTHING_TO_OVERRIDE

idea/testData/quickfix/override/nothingToOverride/afterAddParameterGenericClass.kt

@@ -0,0 +1,8 @@
+// "Change function signature to 'override fun f(a: Int, x: T)'" "true"
+trait A<R> {
+    fun f(a: Int, b: R)
+}
+
+class B<T> : A<T> {
+    <caret>override fun f(a: Int, x: T) {}
+}