(a) "Court" or "probate court" means:
(1) a county court exercising its probate jurisdiction;
(2) a court created by statute and authorized to exercise original probate jurisdiction; or
(3) a district court exercising original probate jurisdiction in a contested matter.
(b) "Statutory probate court" means a court created by statute and designated as a statutory probate court under Chapter 25, Government Code. The term does not include a county court at law exercising probate jurisdiction unless the court is designated a statutory probate court under Chapter 25, Government Code.