extract: skip comments when no statement is selected but expression can be retrieved (IDEA-91985)

java/java-tests/testData/refactoring/extractMethod/SkipComments.java

@@ -0,0 +1,5 @@
+class Test {
+  public static void main(String[] args) {
+    String arg = <selection>args[0];   //comment</selection>
+  }
+}

java/java-tests/testData/refactoring/extractMethod/SkipComments_after.java

@@ -0,0 +1,9 @@
+class Test {
+  public static void main(String[] args) {
+    String arg = newMethod(args[0]);   //comment
+  }
+
+    private static String newMethod(String arg) {
+        return arg;
+    }
+}