Fix: rename duplicate 'result' variable to 'skipResult'

Author: ThanhNguyxn

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Pages/CalculatorListPage.cs

@@ -68,8 +68,8 @@ public override void UpdateSearchText(string oldSearch, string newSearch)
 
             // When we skip, we still need to update the result display
             // The result should show the new search text as a number (already calculated)
-            var result = QueryHelper.Query(newSearch, _settingsManager, false, HandleSave);
-            UpdateResult(result);
+            var skipResult = QueryHelper.Query(newSearch, _settingsManager, false, HandleSave);
+            UpdateResult(skipResult);
             return;
         }