fix: add offset when vehicle are drawn on the same pixel

[oterral]

How to

Others

• It's not a hack or at least an unauthorized hack :).
• The images added are optimized.
• Everything in ticket description has been fixed.
• The author of the MR has made its own review before assigning the reviewer.
• The title means something for a human being and follows the conventional commits specification.
• The title contains [WIP] if it's necessary.
• Labels applied. if it's a release? a hotfix?
• The new class' members & methods are well documented
• Tests added.

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Project	Deployment	Actions	Updated (UTC)
mobility-toolbox-js	Ready	Preview, Comment	Mar 17, 2026 11:36am