search: fix for stucked focus on the search field
search: fix for stucked focus on the search field

* Prevents setting the caret position by typeahead on blur event.
  Changing the caret position in this situation is not needed, and
  causes the field to focus back.

Reviewed-by: Javier Martin Montull <ea6b80e26c65acc242d8916fb6eefa01b123cb69@cern.ch>
Signed-off-by: Kamil Neczaj <f5effa4f8fb04510feb8c36db9502b05ce6bf54d@cern.ch>

tiborsimko/invenio-search,inveniosoftware/invenio-search,tiborsimko/invenio-search,inveniosoftware/invenio-search