fix: use 18 decimals format for the pct in LT script

script/CreateMerkleLT.s.sol

@@ -2,7 +2,7 @@
 pragma solidity >=0.8.22 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
-import { UD2x18 } from "@prb/math/src/UD2x18.sol";
+import { ud2x18 } from "@prb/math/src/UD2x18.sol";
 import { ISablierLockup } from "@sablier/lockup/src/interfaces/ISablierLockup.sol";
 
 import { ISablierMerkleFactory } from "../src/interfaces/ISablierMerkleFactory.sol";
@@ -38,9 +38,9 @@ contract CreateMerkleLT is BaseScript {
         // The tranches with their unlock percentages and durations.
         MerkleLT.TrancheWithPercentage[] memory tranchesWithPercentages = new MerkleLT.TrancheWithPercentage[](2);
         tranchesWithPercentages[0] =
-            MerkleLT.TrancheWithPercentage({ unlockPercentage: UD2x18.wrap(50), duration: 3600 });
+            MerkleLT.TrancheWithPercentage({ unlockPercentage: ud2x18(0.5e18), duration: 3600 });
         tranchesWithPercentages[1] =
-            MerkleLT.TrancheWithPercentage({ unlockPercentage: UD2x18.wrap(50), duration: 7200 });
+            MerkleLT.TrancheWithPercentage({ unlockPercentage: ud2x18(0.5e18), duration: 7200 });
 
         // Deploy the MerkleLT contract.
         // TODO: Update address once deployed.