### Godot version

4.0 rc 6

### System information

win 11

### Issue description

The suffix for target params is "m" which I think is meters, but that doesn't make any sense for 2D.

### Steps to reproduce

just make a skeletonmodification2dtwoboneik

### Minimal reproduction project

n/a
if (!is_setup || !stack) {
		ERR_PRINT_ONCE("Cannot update target cache: modification is not properly setup!");
		return;
	}
	target_node_cache = ObjectID();
	if (stack->skeleton) {
		if (stack->skeleton->is_inside_tree()) {
			if (stack->skeleton->has_node(target_node)) {
				Node *node = stack->skeleton->get_node(target_node);
				ERR_FAIL_COND_MSG(!node || stack->skeleton == node,
						"Cannot update target cache: node is this modification's skeleton or cannot be found!");
				ERR_FAIL_COND_MSG(!node->is_inside_tree(),
						"Cannot update target cache: node is not in the scene tree!");
				target_node_cache = node->get_instance_id();
			}
		}
	}
}
void SkeletonModification2DTwoBoneIK::update_joint_one_bone2d_cache() {