update schema type check for zod function

-  z.function() is no longer a Zod schema. Instead, it acts as a standalone "function factory" for defining Zod-validated functions.
- .def.type checks schema type. If its `'function'`, fallback to `z.any()`

Author: madhav2348

src/core/friendly_errors/param_validator.js

@@ -230,8 +230,8 @@ function validateParams(p5, fn, lifecycles) {
       param = param?.replace(/^\.\.\.(.+)\[\]$/, '$1');
 
       let schema = generateTypeSchema(param);
-      if (!schema || typeof schema.optional !== 'function') {
-        schema = z.any(); 
+      if (schema.def.type === 'function') {
+        schema = z.any()
       }
 
       if (isOptional) {