feat(core): Implement partial execution for all tool nodes (#15168)

packages/@n8n/nodes-langchain/nodes/mcp/McpClientTool/McpClientTool.node.test.ts

@@ -38,6 +38,7 @@ describe('McpClientTool', () => {
 					description: 'MyTool does something',
 					name: 'MyTool',
 					value: 'MyTool',
+					inputSchema: { type: 'object', properties: { input: { type: 'string' } } },
 				},
 			]);
 		});

packages/@n8n/nodes-langchain/nodes/mcp/McpClientTool/loadOptions.ts

@@ -28,5 +28,6 @@ export async function getTools(this: ILoadOptionsFunctions): Promise<INodeProper
 		name: tool.name,
 		value: tool.name,
 		description: tool.description,
+		inputSchema: tool.inputSchema,
 	}));
 }