1.3.3a: fix(typeahead): change to select class

- Change to select `.uib-typeahead-match` class instead of the `li` tag

BREAKING CHANGE: This changes the selector used so that it doesn't select for the `li` tag specifically, but the elements with the class `uib-typeahead-match` - if using a custom template, this class needs to be added to the `li` element in the typeahead popup template.

Closes #5922
Fixes #5848