(a) A county commission shall not be liable for or be a party to a suit challenging the expenditure or use of public funds where a local or general law provides that the public funds are to be expended, awarded, or used at the discretion of a single public official.
(b) For suits challenging the expenditure, award, or use of public funds as described in subsection (a), no damages or litigation costs may be recovered from funds within the control of the county commission.