fix(gantt): tasks resizing indicators should point both left and right #5169

Job	Run time
Status check > Unit	1s
CI \| Unit	1s
CI \| Visual	1s
Compile themes / run	47s
Lint styles / run (default)	1m 22s
Lint scripts / run	46s
Lint styles / run (bootstrap)	1m 32s
Render test pages / verify	7s
Lint styles / run (material)	1m 27s
Lint styles / run (classic)	1m 29s
Lint styles / run (fluent)	1m 10s
Render test pages / run	0s
Status check > Lint scripts	1s
Status check > A11y / prepare	1s
Create screenshots / run (default)	2m 13s
Create screenshots / run (bootstrap)	2m 16s
Create screenshots / run (material)	2m 17s
Create screenshots / run (classic)	2m 13s
Create screenshots / run (fluent)	2m 17s
Status check > A11y / run-checks (1)	2m 21s
Status check > A11y / run-checks (2)	2m 37s
Status check > A11y / run-checks (3)	3m 2s
Status check > A11y / run-checks (4)	2m 41s
Status check > Lint styles	1s
Detect changes	22s
Status check > Visual	1s
	31m 6s

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