[lua] Chocobo riding game reward fix

[CriticalXI]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

• I was calculating the clear time again when the reward was sent to the player rather than when they actually finished the race, resulting in giving the wrong reward if the player sat on the event dialogue too long.
• General styling updates

Steps to test these changes

• Try a race, and sit on the event dialogue for awhile so it goes over the reward threshold to the next tier
• See you still get the reward for what time you entered the trigger area