New J2K: Fix existing test data

j2k/testData/fileOrElement/methodCallExpression/genericMethod.new.kt

@@ -1,12 +1,12 @@
 package demo
 
 internal class Map {
-    fun <K, V> put(k: K?, v: V?) {}
+    fun <K, V> put(k: K?, v: V) {}
 }
 
 internal class U {
     fun test() {
         val m = Map()
-        m.put<String?, Int?>(null, 10)
+        m.put<String, Int>(null, 10)
     }
 }