See the parent task T271279 for how the final form should look.
This task is for creating the 'action type' filters.
Form fields are specified using an array, as documented in HTMLForm.php
The 'Action type' fields should have the following:
- Should have type 'check', which maps to HTMLCheckField (see HTMLForm::typeMappings)
- Should become disabled if Voter log is selected in the dropdown at the top of the form, and enabled otherwise
The values of these fields should be passed through to the SecurePollLogPager. The pager's query, built in SecurePollLogPager::getFilterConds, should be updated.