optimised how header images are being reacted to and displayed #1801

Job	Run time
data-test (3.10)	26s
data-test (3.11)	26s
data-test (3.12)	23s
data-build / build	3m 13s
data-deployment-1 / Restart the deployment	5s
data-deployment-2 / Restart the deployment	6s
	4m 39s

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