fix boolean edit #5940

Job	Run time
Test	2m 13s
Build extensions	1m 28s
ember-try (ember-lts-3.16)	1m 22s
ember-try (ember-lts-3.20)	1m 13s
ember-try (ember-lts-3.24)	1m 15s
ember-try (ember-lts-3.28)	1m 17s
ember-try (ember-release)	1m 35s
ember-try (ember-beta)	1m 23s
ember-try (ember-canary)	1m 16s
ember-try (ember-default-no-prototype-extensions)	1m 23s
Publish Chrome extension	9s
Publish Firefox extension	25s
Publish npm package	6s
Publish bookmarklet	0s
	15m 5s

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