TIMOB-15535: Don't default to setting textareas to InputType.TYPE_TEXT_FLAG_IME_MULTI_LINE.

https://jira.appcelerator.org/browse/TIMOB-15535

Test case in Jira.  As a part of this PR, please test against the original bug that caused this: 
https://jira.appcelerator.org/browse/TIMOB-14615