LangGraph 1.2.19

Changes since 1.2.18

• release(langgraph): 1.2.19 (#9504)
• release(checkpoint-sqlite): 3.1.3 (#9505)
• fix(langgraph): keep trace_policy from rewriting streamed node payloads (#9486)
• fix(langgraph): give messages and tools events the namespace of their graph (#9458)
• chore(deps): bump setuptools from 83.0.0 to 84.1.0 in /libs/langgraph (#9433)
• fix(langgraph): emit node-output messages from a graph streamed inside a node (#9463)
• fix(langgraph): respect subgraphs=False in RemoteGraph.stream under a streaming parent (#9453)
• fix(langgraph): don't report a paused tool as failed on the tools stream (#9406)
• fix(langgraph): return an awaited task's value while streaming (#9407)
• feat(langgraph): list ToolNode tool names in graph node metadata (#9449)