KT-5959 Imports should be inserted on paste from java with conversion to Kotlin

#KT-5959 Fixed

idea/testData/copyPaste/conversion/AddImportsButNoConversion.java

@@ -0,0 +1,10 @@
+// NO_CONVERSION_EXPECTED
+import java.io.*;
+import java.util.Collections;
+import java.util.List;
+
+class C {
+    <selection>List<File></selection> foo() {
+        return Collections.emptyList();
+    }
+}