Spruce wall hanging signs use the oak map color on maps

The Bug:

Spruce wall hanging signs use the oak map color on maps.

Spruce hanging signs correctly use the spruce color, but spruce wall hanging signs use the oak color.

Steps to Reproduce:

1. Summon an area of grass and poplar saplings by using the commands provided below.

   /fill ~2 ~ ~-2 ~11 ~ ~-11 minecraft:spruce_wall_hanging_sign strict

   /fill ~2 ~ ~2 ~11 ~ ~11 minecraft:spruce_hanging_sign strict

2. Obtain a map, fill it, and look at how the spruce wall hanging sings are colored on it.

Observed Behavior:

Spruce wall hanging sign’s map color is oak.

Expected Behavior:

Spruce wall hanging sign’s map color would be spruce.