Fix Express Checkout Element button width (#9094) #22806

Job	Run time
WP - nightly \| WC - latest \| wcpay - merchant	14m 39s
WP - nightly \| WC - latest \| wcpay - shopper	48m 6s
Generate the matrix for subscriptions-tests dynamically	1s
WP - nightly \| WC - latest \| subscriptions - merchant	4m 56s
WP - nightly \| WC - latest \| subscriptions - shopper	7m 30s
WC - 7.7.0 \| wcpay - merchant	14m 13s
WC - 7.7.0 \| wcpay - shopper	44m 52s
WC - 7.7.0 \| subscriptions - merchant	4m 51s
WC - 7.7.0 \| subscriptions - shopper	7m 15s
WC - latest \| wcpay - merchant	14m 46s
WC - latest \| wcpay - shopper	47m 54s
WC - latest \| subscriptions - merchant	4m 48s
WC - latest \| subscriptions - shopper	7m 13s
WC - beta \| wcpay - merchant	14m 29s
WC - beta \| wcpay - shopper	48m 17s
WC - beta \| subscriptions - merchant	4m 43s
WC - beta \| subscriptions - shopper	6m 54s
	4h 55m 27s

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