Build/Test Tools: Allow the `playground-comment` job to fail. #14173

Job	Run time
QUnit Tests	2m 12s
Slack Notifications / Prepare notifications	6s
Slack Notifications / Success notifications	2s
Slack Notifications / Fixed notifications	0s
Slack Notifications / Cancelled notifications	0s
Slack Notifications / Failure notifications	0s
Failed workflow tasks	0s
	2m 20s

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