Don't throw exception when casing fail in JavaScript evaluator (#17436)

---------

Co-authored-by: Sébastien Ros <sebastienros@gmail.com>

src/OrchardCore.Modules/OrchardCore.Workflows/Scripting/JavaScriptWorkflowScriptEvaluator.cs

@@ -30,13 +30,24 @@ public async Task<T> EvaluateAsync<T>(WorkflowExpression<T> expression, Workflow
             return default;
         }
 
-        var workflowType = workflowContext.WorkflowType;
-        var directive = $"js:{expression}";
-        var expressionContext = new WorkflowExecutionScriptContext(workflowContext);
+        try
+        {
+            var workflowType = workflowContext.WorkflowType;
+            var directive = $"js:{expression}";
+            var expressionContext = new WorkflowExecutionScriptContext(workflowContext);
+
+            await _workflowContextHandlers.InvokeAsync((h, expressionContext) => h.EvaluatingScriptAsync(expressionContext), expressionContext, _logger);
 
-        await _workflowContextHandlers.InvokeAsync((h, expressionContext) => h.EvaluatingScriptAsync(expressionContext), expressionContext, _logger);
+            var methodProviders = scopedMethodProviders.Concat(expressionContext.ScopedMethodProviders);
+
+            // Some types cannot be cast (e.g., null to bool), so we need to catch the exception and return the default value.
+            return (T)_scriptingManager.Evaluate(directive, null, null, methodProviders);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "An error occurred while evaluating the expression: {Expression}", expression.Expression);
+        }
 
-        var methodProviders = scopedMethodProviders.Concat(expressionContext.ScopedMethodProviders);
-        return (T)_scriptingManager.Evaluate(directive, null, null, methodProviders);
+        return default;
     }
 }