feat(grid): add styles for row spanned cells #5535

Job	Run time
Status check > Unit	1s
CI \| Visual	1s
CI \| Unit	1s
Compile themes / run	50s
Lint scripts / run	50s
Render test pages / verify	7s
Lint styles / run (default)	1m 25s
Test units / run (default)	48s
Lint styles / run (bootstrap)	1m 18s
Test units / run (bootstrap)	48s
Lint styles / run (material)	1m 20s
Test units / run (material)	51s
Lint styles / run (classic)	1m 19s
Test units / run (classic)	48s
Lint styles / run (fluent)	1m 21s
Test units / run (fluent)	1m 12s
Render test pages / run	2m 22s
Status check > Lint scripts	1s
Status check > Test units	1s
Status check > Lint styles	1s
Status check > A11y / prepare	1s
Create screenshots / run (default)	2m 21s
Create screenshots / run (bootstrap)	2m 25s
Create screenshots / run (material)	2m 8s
Create screenshots / run (classic)	2m 14s
Create screenshots / run (fluent)	2m 11s
Status check > A11y / run-checks (1)	2m 26s
Status check > A11y / run-checks (2)	2m 29s
Status check > A11y / run-checks (3)	2m 44s
Status check > A11y / run-checks (4)	2m 46s
Detect changes	17s
Status check > Visual	1s
	37m 28s

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