Fix workflow-insert with reroute nodes

[christian-byrne]

Fix #1999: Reroute nodes cannot be be added via workflow-insert because their onConnectionsChange is invoked before graph is fully configured. Fix by adding the same guard other widgets have:

ComfyUI_frontend/src/extensions/core/widgetInputs.ts

Lines 135 to 139 in 72f7c31

	onConnectionsChange(_, index, connected) {
	if (app.configuringGraph) {
	// Dont run while the graph is still setting up
	return
	}

The connections are still set up correctly after the graph is configured.

┆Issue is synchronized with this Notion page by Unito

[webfiltered]

With tests, even! Thank you. 😄

[huchenlei]

Can we collapse the sidebar before taking the screenshot?

Also I would like a more minimal reproduction for the example workflow used for this test to be more isolated to other features.