Minecarts no longer pass through non-full-height blocks when snapping to rails

In the current version of the Minecart Improvements experiment, minecarts can no longer phase through semi-solid blocks like Mud and Soul Sand. This feature was preserved in the 24w33a version of Minecart Improvements, but has been broken in 24w34a.

This behaviour was not listed in the changelog, and is a heavily utilised mechanic, and therefore is assumed to be a bug