agent: Fix issue with duplicated tool names from MCP servers (#33811)

Closes #33792

Follow up to #33237 - Turns out my fix for this was not correct

Release Notes:

- agent: Fixed an issue where tools would not work when two MCP servers
provided a tool with the same name

crates/agent_ui/src/tool_compatibility.rs

@@ -42,8 +42,8 @@ impl IncompatibleToolsState {
                     .profile()
                     .enabled_tools(cx)
                     .iter()
-                    .filter(|tool| tool.input_schema(model.tool_input_format()).is_err())
-                    .cloned()
+                    .filter(|(_, tool)| tool.input_schema(model.tool_input_format()).is_err())
+                    .map(|(_, tool)| tool.clone())
                     .collect()
             })
     }