The Switch/Combine onConnectionsChange handlers detect workflow loading
with `new Error().stack.includes('loadGraphData')`. V8 keeps only 10
stack frames, so on deep load paths (tab reload, workflow re-open)
`loadGraphData` falls out of the trace, the guard fails, and the
handler runs its interactive-edit logic during configure: addInput
per connected link, removeInput/removeOutput, and the slot-0 connect()
that throws `t.findInputSlot is not a function` (#1223, #1244).
Also check `app.configuringGraph`, which the frontend sets for the
whole of graph configure, independent of stack depth.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>