chore(html): reuse helpers in tests #3324

Job	Run time
Status check > Unit	1s
CI \| Unit	1s
CI \| Visual	1s
Compile themes / run	35s
Lint scripts / run	1m 0s
Lint styles / run (default)	2m 20s
Render test pages / verify	10s
Lint styles / run (bootstrap)	2m 23s
Lint styles / run (material)	2m 16s
Lint styles / run (classic)	2m 10s
Lint styles / run (nouvelle)	49s
Lint styles / run (fluent)	39s
Render test pages / run	2m 26s
Status check > Lint scripts	1s
Status check > Lint styles	1s
Status check > A11y / prepare	1s
Create screenshots / run (default)	2m 29s
Create screenshots / run (bootstrap)	2m 26s
Create screenshots / run (material)	2m 27s
Create screenshots / run (classic)	2m 18s
Create screenshots / run (nouvelle)	1m 44s
Create screenshots / run (fluent)	2m 38s
Status check > A11y / run-checks (1)	2m 50s
Status check > A11y / run-checks (2)	2m 48s
Status check > A11y / run-checks (3)	2m 35s
Status check > A11y / run-checks (4)	2m 50s
Detect changes	26s
Status check > Visual	1s
	40m 26s

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