feat(grid): add styles for row spanned cells #5536

Job	Run time
Status check > Unit	1s
CI \| Unit	1s
CI \| Visual	1s
Lint scripts / run	50s
Render test pages / verify	10s
Compile themes / run	42s
Lint styles / run (default)	1m 22s
Test units / run (default)	48s
Lint styles / run (bootstrap)	1m 23s
Test units / run (bootstrap)	52s
Lint styles / run (material)	1m 17s
Test units / run (material)	50s
Lint styles / run (classic)	1m 18s
Test units / run (classic)	46s
Lint styles / run (fluent)	1m 19s
Test units / run (fluent)	1m 8s
Render test pages / run	2m 19s
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 39s
Create screenshots / run (bootstrap)	2m 3s
Create screenshots / run (material)	2m 28s
Create screenshots / run (classic)	2m 37s
Create screenshots / run (fluent)	2m 27s
Status check > A11y / run-checks (1)	2m 29s
Status check > A11y / run-checks (2)	2m 28s
Status check > A11y / run-checks (3)	2m 41s
Status check > A11y / run-checks (4)	2m 39s
Detect changes	16s
Status check > Visual	1s
	37m 59s

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