Bigger scroll bar for long trips

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/bigger-scroll-bar-for-long-trips/
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include a scroll bar on the basic planner similar to the scroll bar on the list of stops. It drives me nuts trying to find it. It is barely visible.