Prevent onboarding flow access without server connection (#7386) #20747

Job	Run time
WP - nightly \| WC - latest \| wcpay - merchant	9m 7s
Generate the matrix for subscriptions-tests dynamically	3s
WP - nightly \| WC - latest \| wcpay - shopper	14m 27s
WP - nightly \| WC - latest \| subscriptions - merchant	6m 25s
WP - nightly \| WC - latest \| subscriptions - shopper	8m 30s
WC - 7.6.0 \| wcpay - merchant	14m 22s
WC - 7.6.0 \| wcpay - shopper	2h 3m 16s
WC - 7.6.0 \| subscriptions - merchant	12m 14s
WC - 7.6.0 \| subscriptions - shopper	17m 6s
WC - latest \| wcpay - merchant	9m 2s
WC - latest \| wcpay - shopper	15m 44s
WC - latest \| subscriptions - merchant	6m 0s
WC - latest \| subscriptions - shopper	10m 6s
WC - beta \| wcpay - merchant	9m 33s
WC - beta \| wcpay - shopper	14m 24s
WC - beta \| subscriptions - merchant	7m 40s
WC - beta \| subscriptions - shopper	9m 44s
	4h 47m 43s

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