Pass context between AssistantAgent for handoffs #3569

Job	Run time
check-proto-changes-python	1m 22s
codecov (./packages/autogen-core)	1m 2s
docs (./packages/autogen-core)	1m 34s
codecov (./packages/autogen-magentic-one)	1m 52s
docs-example-check (./packages/autogen-core)	2m 52s
codecov (./packages/autogen-ext)	3m 6s
format	50s
codecov (./packages/autogen-agentchat)	1m 8s
lint	49s
markdown-code-lint	2m 8s
mypy (./packages/autogen-core)	3m 0s
mypy (./packages/autogen-magentic-one)	1m 26s
pyright (./packages/autogen-core)	1m 5s
mypy (./packages/agbench)	1m 4s
test (./packages/autogen-core)	1m 0s
pyright (./packages/autogen-magentic-one)	57s
samples-code-check	56s
mypy (./packages/autogen-ext)	1m 59s
test (./packages/autogen-magentic-one)	1m 40s
pyright (./packages/agbench)	1m 3s
mypy (./packages/autogen-agentchat)	1m 17s
test (./packages/autogen-ext)	3m 5s
pyright (./packages/autogen-ext)	1m 9s
test (./packages/autogen-agentchat)	1m 0s
pyright (./packages/autogen-agentchat)	55s
mypy (./packages/magentic-one-cli)	1m 22s
pyright (./packages/magentic-one-cli)	54s
	40m 35s

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