J2K: Get nullability from variable initializer when converting call

#KT-11534 In Progress

j2k/testData/fileOrElement/nullability/nullableInitializer2.java

@@ -0,0 +1,21 @@
+import org.jetbrains.annotations.Nullable;
+
+public class TestJava {
+    public Object nullableObj(int p) {
+        return p > 0 ? "response" : null;
+    }
+
+    public String nullableInitializerFieldCast = (String) nullableObj(3);
+    private String nullableInitializerPrivateFieldCast = (String) nullableObj(3);
+
+    public void testProperty() {
+        nullableInitializerFieldCast.charAt(0);
+        nullableInitializerPrivateFieldCast.charAt(0);
+    }
+
+    public void testLocalVariable() {
+        String nullableInitializerValCast = (String) nullableObj(3);
+
+        nullableInitializerValCast.charAt(0);
+    }
+}