onChange event emitted on enter when "no results" message is present

[ostermanj]

On hitting enter, an onChange event is fired for the last option to match the users search even when the search results in "no results".

Say as user was searching for "Brazilia" in a options list that included "Brazil" but not "Brazilia". As the user is typing, "Brazil" will become the matching option. As the user finishes typing "Brazilia," the "no results" message will appear, but if they hit enter "Brazil" will still be selected. Similarly, if a user misspells a word, whatever option last matched the keystrokes will be selected.

PR coming to address.