[ECO-4963] Clean up when user finishes with subscription #695

Job	Run time
spec-coverage	56s
generate-matrices	1m 27s
lint	1m 12s
check-documentation	1m 40s
SPM (Xcode 16)	3m 7s
Xcode, macOS (Xcode 16)	3m 9s
Xcode, `release` configuration, macOS (Xcode 16)	2m 8s
Xcode, iOS (Xcode 16)	4m 50s
SPM, `release` configuration (Xcode 16)	1m 8s
Xcode, `release` configuration, iOS (Xcode 16)	1m 38s
Xcode, tvOS (Xcode 16)	3m 18s
Xcode, `release` configuration, tvOS (Xcode 16)	1m 48s
Example app, macOS (Xcode 16)	1m 39s
Example app, iOS (Xcode 16)	1m 40s
Example app, tvOS (Xcode 16)	1m 40s
all-checks-completed	1s
	31m 21s

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