Polish crate rendering

This disables palette modifiers (including player remap) for crates, and tweaks the regular crates in C&C and RA.

C&C now uses both wood and steel versions, while RA uses wood everywhere for consistency.

RA had always switched from steel -> wood when a crate lands in the water, but the white player remap made the wood look kind of like steel so it wasn't so obvious.  We can re-enable the steel crates in RA once somebody creates floating frames for it.