fix(mcp): prevent wizard height jump when switching types

- Add min-h-[400px] to form fields container
- Ensures consistent height between stdio and http modes
- Eliminates visual jump when toggling between types

src/components/mcp/McpWizardModal.tsx

@@ -209,7 +209,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
           </div>
 
           {/* Form Fields */}
-          <div className="space-y-4">
+          <div className="space-y-4 min-h-[400px]">
             {/* Type */}
             <div>
               <label className="mb-2 block text-sm font-medium text-gray-900 dark:text-gray-100">