runners/services: Do not match categories for short queries
Otherwise, one can get unexpected results for substring-matches. Apart from the matches not being relevant, this is confusing, because the category is not visible to the user BUG: 469769
Otherwise, one can get unexpected results for substring-matches. Apart from the matches not being relevant, this is confusing, because the category is not visible to the user BUG: 469769
mentioned in commit fc675e7f