New dark oak boat and spruce boat textures do not appear in-game

Summary:
In 1.18.20.25 Beta, the file name for the new dark oak boat texture has been corrected from "boat_dark_oak" to "boat_darkoak", and a new texture has been added for the spruce boat. However, these new textures do not appear in-game because there is no "items" folder inside the "textures" folder.

Steps to Reproduce:

1. Go to C:/Program Files/WindowsApps/Microsoft.MinecraftUWP/data/resource_packs/vanilla_1.18.20/textures

Expected Results:
A "items" folder with the two new boat files inside should be inside the "textures" folder.