Always support tools list changed notifications

Author: kageiit

src/server/config.rs

@@ -191,9 +191,7 @@ impl Default for ServerConfig {
                 prompts: Some(PromptCapabilities {
                     list_changed: false,
                 }),
-                tools: Some(ToolCapabilities {
-                    list_changed: false,
-                }),
+                tools: Some(ToolCapabilities { list_changed: true }),
             }),
         }
     }