There was no result for searching with Ticket price "0.0"

[khangon]

Describe the bug
As the organizer, I access the View Attendees page and search with Ticket price "0.0" (Free ticket). There was no result found.

To Reproduce
Steps to reproduce the behavior:

1. Create an Event.
2. Add Tickets with many ticket types.
3. Save and Publish the Event.
4. Order all types of tickets belong to the Event.
5. Go to Manage Events.
6. At the Event created, access Event Dashboard > Tickets > Attendees > tab All.
7. In the search box, input "0.0" and observe the result.

Expected behavior
All tickets with Ticket price of "0.00" should be found.

Screenshots