feat(frontend/builder): Add sub-graph update UX#11631

Pwuts wants to merge 2 commits intodevSignificant-Gravitas/AutoGPT:devfrom

pwuts/open-2743-ability-to-update-sub-agents-in-graph-without-re-addingSignificant-Gravitas/AutoGPT:pwuts/open-2743-ability-to-update-sub-agents-in-graph-without-re-addingCopy head branch name to clipboard