feat: add prague to chains map

Author: schaable

packages/hardhat-core/src/internal/core/config/default-config.ts

@@ -77,6 +77,7 @@ export const defaultHardhatNetworkParams: Omit<
           [HardforkName.MERGE, 15_537_394],
           [HardforkName.SHANGHAI, 17_034_870],
           [HardforkName.CANCUN, 19_426_589],
+          [HardforkName.PRAGUE, -1], // TBD
         ]),
       },
     ],
@@ -138,6 +139,7 @@ export const defaultHardhatNetworkParams: Omit<
           [HardforkName.MERGE, 1_450_409],
           [HardforkName.SHANGHAI, 2_990_908],
           [HardforkName.CANCUN, 5_187_023],
+          [HardforkName.PRAGUE, -1], // TBD
         ]),
       },
     ],