ULTIMA8: No landing sound when finishing a jump

[OMGPizzaGuy]

Version 2.8.0 - In original game, a footstep sound was played at the end of a jump. This occurs even when "Avatar steps" option is turned off.

[OMGPizzaGuy]

The jump animation ends with an AFF_SPECIAL frame that checks for ground beneath, but does so before applying the delta z for the animation. Some possible solutions:

• Alter CurrentMap::surfaceSearch to have some tolerance for items detected below the actor - may have unintended consequences
• Apply the animation movement before the doSpecial() check - may still not find floor if _interpolate
• Make a surface search method that can take the tracker coordinates

[OMGPizzaGuy]

In 9cc0768d:

ULTIMA8: Use animation tracker target position for footstep sounds.
This causes footstep sounds to play correctly at the end of a jump. Fixes #14846