Fix EA-126019: Handle 'null' PsiType as nullable Any in "Create" actions

idea/testData/quickfix/createFromUsage/createFunction/fromJava/nullType.after.Dependency.kt

@@ -0,0 +1,5 @@
+class Dep {
+    fun foo(): Any? {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/fromJava/nullType.after.java

@@ -0,0 +1,8 @@
+// "Add method 'foo' to 'Dep'" "true"
+// RUNTIME_WITH_JDK_10
+class J {
+    void test() {
+        Dep dep = new Dep();
+        var foo = dep.<selection><caret></selection>foo();
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/fromJava/nullType.before.Dependency.kt

@@ -0,0 +1 @@
+class Dep {}

idea/testData/quickfix/createFromUsage/createFunction/fromJava/nullType.before.Main.java

@@ -0,0 +1,8 @@
+// "Add method 'foo' to 'Dep'" "true"
+// RUNTIME_WITH_JDK_10
+class J {
+    void test() {
+        Dep dep = new Dep();
+        var foo = dep.<caret>foo();
+    }
+}