AI 147681: Fix SearchDialog crash on missing FORMAT suggestion column.

  CL 147456 introduced support for HTML formatted search suggestions.
  This is triggered by the value "html" in the SUGGEST_COLUMN_FORMAT
  column. However, the code failed to check that the
  SUGGEST_COLUMN_FORMAT column was present before trying to read it.
  This resulted in an IllegalStateException being thrown when searching
  with a suggestion provider that does not include the SUGGEST_COLUMN_FORMAT
  column. This broke search at least in the Contacts and Music apps.

Automated import of CL 147681