feat: allow `retry 0` directives (#2479) #978

Job	Run time
Release Go Binaries	5m 30s
Build FTL-in-a-box Docker Image	3m 2s
Build Controller Docker Image	3m 16s
Build Runner Docker Image	3m 6s
Release VSCode Extension	1m 8s
Release Assets	1m 20s
Release Hermit	10s
	17m 32s

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