Python: SelectorGroup pattern support

[moonbox3]

Update AutoGen docs to point that the Group Chat Pattern is what should be used when migrating from AutoGen's SelectorGroup pattern.

Discussed in #3085

^{Originally posted by JeffreyKannankeril January 5, 2026}
Any idea when the SelectorGroup pattern from Autogen will be supported in agent-framework?
https://learn.microsoft.com/en-us/agent-framework/migration-guide/from-autogen/#future-patterns