lib/search/word_search: limit entry id query to single column

lib/search/word_search/entry_id_query.dart

@@ -39,6 +39,7 @@ Future<List<int>> fetchEntryIds(
   if (searchMode == SearchMode.Kanji) {
     entryIds = (await connection.query(
       'JMdict_EntryByKanji',
+      columns: ['entryId'],
       where: 'kanji LIKE ?',
       whereArgs: ['%$word%'],
       limit: pageSize,
@@ -49,6 +50,7 @@ Future<List<int>> fetchEntryIds(
   } else if (searchMode == SearchMode.Kana) {
     entryIds = (await connection.query(
       'JMdict_EntryByKana',
+      columns: ['entryId'],
       where: 'kana LIKE ?',
       whereArgs: ['%$word%'],
       limit: pageSize,
@@ -59,6 +61,7 @@ Future<List<int>> fetchEntryIds(
   } else {
     entryIds = (await connection.query(
       'JMdict_EntryByEnglish',
+      columns: ['entryId'],
       where: 'english LIKE ?',
       whereArgs: ['%$word%'],
       limit: pageSize,