fix(tabstrip): correct scrollable overlay in rtl #5399

Job	Run time
Status check > Unit	1s
CI \| Visual	1s
CI \| Unit	1s
Lint styles / run (default)	1m 22s
Lint styles / run (bootstrap)	1m 20s
Lint styles / run (material)	1m 23s
Lint scripts / run	1m 4s
Lint styles / run (classic)	1m 23s
Compile themes / run	1m 0s
Lint styles / run (fluent)	1m 19s
Render test pages / verify	9s
Render test pages / run	2m 44s
Status check > Lint scripts	1s
Status check > Lint styles	1s
Status check > A11y / prepare	1s
Create screenshots / run (default)	2m 35s
Create screenshots / run (bootstrap)	2m 22s
Create screenshots / run (material)	2m 31s
Create screenshots / run (classic)	2m 17s
Create screenshots / run (fluent)	2m 21s
Status check > A11y / run-checks (1)	2m 30s
Status check > A11y / run-checks (2)	2m 35s
Status check > A11y / run-checks (3)	2m 26s
Status check > A11y / run-checks (4)	2m 48s
Detect changes	14s
Status check > Visual	1s
	34m 30s

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