Civil procedure — Discovery — Financial information — Non-parties — Trial court did not depart from essential requirements of law by compelling party to provide documents concerning financial arrangements between his attorney, his insurance company, and his retained expert — Question certified whether the analysis and decision in Worley v. Central Florida Young Men’s Christian Association should also apply to preclude a defense law firm or insurance company that is not a party to the litigation from having to disclose its financial relationship with experts that it retains or compensates for purposes of litigation, including those that perform comprehensive medical examinations under Rule 1.360