updates _updateReward logic to account withdraw requests

contracts/Mocks/WsysMock.sol

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.18;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+
+contract WsysMock is ERC20, Ownable, ERC20Burnable {
+    constructor(string memory name, string memory symbol, uint256 initialAmount) ERC20(name, symbol) Ownable(msg.sender) {
+        _mint(msg.sender, initialAmount);
+    }
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+
+    function decimals() public pure override returns (uint8) {
+        return 18;
+    }
+}

contracts/SingleSidedInsurancePool.sol

@@ -291,8 +291,14 @@ contract SingleSidedInsurancePool is
             uint256 unoReward = blocks * poolInfo.unoMultiplierPerBlock;
             accUnoPerShare = accUnoPerShare + (unoReward * ACC_UNO_PRECISION) / tokenSupply;
         }
-        uint256 userBalance = userInfo[_to].amount;
-        pending = (userBalance * uint256(accUnoPerShare)) / ACC_UNO_PRECISION - userInfo[_to].rewardDebt;
+        (uint256 pendingAmount,,) = IRiskPool(riskPool).getWithdrawRequest(_to);
+        uint256 userBalance = userInfo[_to].amount - pendingAmount;
+        if(userBalance == 0){
+            pending = 0;
+        }
+        else {
+            pending = (userBalance * uint256(accUnoPerShare)) / ACC_UNO_PRECISION - userInfo[_to].rewardDebt;
+        }
     }
 
     /**
@@ -550,13 +556,11 @@ contract SingleSidedInsurancePool is
     }
 
     function _updateReward(address _to) internal returns (uint256, uint256) {
-        uint256 requestTime;
-        (, requestTime, ) = IRiskPool(riskPool).getWithdrawRequest(_to);
-        if (requestTime > 0) {
-            return (0, 0);
+        (uint256 pendingAmount,,) = IRiskPool(riskPool).getWithdrawRequest(_to);
+        uint256 amount = userInfo[_to].amount - pendingAmount;
+        if(amount == 0){
+            return (0,0);
         }
-
-        uint256 amount = userInfo[_to].amount;
         uint256 accumulatedUno = (amount * uint256(poolInfo.accUnoPerShare)) / ACC_UNO_PRECISION;
         uint256 _pendingUno = accumulatedUno - userInfo[_to].rewardDebt;