Stop controller on interrupt.

Assisted-By: devx/3236e566-7538-432e-a30a-2bdf37265ed4

Author: samuel-williams-shopify

lib/async/container/controller.rb

@@ -309,7 +309,7 @@ def run(signals: Async::Signals.default)
 					end
 				end
 			rescue Interrupt
-				# Ignore - normal shutdown - can propagate from top level Sync.
+				self.stop(false)
 			end
 		end
 	end