Workers’ compensation — Attorney’s fees — Costs — Prevailing party — Appeals — Judge of compensation claims did not err in finding that claimant was not entitled to attorney’s fees and costs as a prevailing party — Claimant did not meet burden of showing that her attorney’s efforts achieved acceptance and payment of her claims because record shows that employer/carrier never denied benefits at issue — Claim of entitlement to costs as a prevailing party was not preserved for appellate review where issue was not brought to JCC’s attention through filing of motion for rehearing