Toggle query result columns isn't working as expected

Steps to reproduce:

1. Run a random query. e.g. SELECT * FROM mysql.help_topic
2. Click `Columns` dropdown button in the results pane
3. Click on `Search` input to search for a column. e.g. name

Expected result:

• The checkbox for the `name` option should be checked by default.
• When toggling the columns, it should toggle the visibility of columns in the result table

Actual result:

• The checkbox for the `name` option isn't checked by default.
• Toggling columns is not working.