Better graceful shutdown for KeyboardInterrupt #8910

Job	Run time
fabric-cpu (macOS-11, lightning, 3.10, 2.0)	8m 15s
fabric-cpu (ubuntu-20.04, lightning, 3.10, 2.0)	6m 0s
fabric-cpu (windows-2022, lightning, 3.10, 2.0)	8m 14s
fabric-cpu (macOS-11, lightning, 3.11, 2.1)	8m 23s
fabric-cpu (ubuntu-20.04, lightning, 3.11, 2.1)	5m 56s
fabric-cpu (windows-2022, lightning, 3.11, 2.1)	8m 14s
fabric-cpu (macOS-11, lightning, 3.11, 2.2)	7m 52s
fabric-cpu (ubuntu-20.04, lightning, 3.11, 2.2)	6m 2s
fabric-cpu (windows-2022, lightning, 3.11, 2.2)	7m 9s
fabric-cpu (macOS-14, lightning, 3.10, 2.3)	6m 7s
fabric-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	6m 23s
fabric-cpu (windows-2022, lightning, 3.11, 2.3)	8m 45s
fabric-cpu (macOS-12, fabric, 3.11, 2.0)	7m 29s
fabric-cpu (ubuntu-22.04, fabric, 3.11, 2.0)	5m 33s
fabric-cpu (windows-2022, fabric, 3.11, 2.0)	6m 58s
fabric-cpu (macOS-12, fabric, 3.11, 2.1)	7m 56s
fabric-cpu (ubuntu-22.04, fabric, 3.11, 2.1)	5m 32s
fabric-cpu (windows-2022, fabric, 3.11, 2.1)	7m 46s
fabric-cpu (macOS-11, lightning, 3.8, 2.0, oldest)	10m 23s
fabric-cpu (ubuntu-20.04, lightning, 3.8, 2.0, oldest)	6m 42s
fabric-cpu (windows-2022, lightning, 3.8, 2.0, oldest)	8m 20s
fabric-cpu (macOS-11, fabric, 3.8, 2.0)	7m 36s
fabric-cpu (ubuntu-20.04, fabric, 3.8, 2.0)	5m 41s
fabric-cpu (windows-2022, fabric, 3.8, 2.0)	6m 19s
	2h 53m 35s

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