Item outlines in some UIs still use old textures

Here is a list of every UI item outline that needs to be updated (may be incomplete):

• Enchantment Table (Lapis Lazuli outline); ^{Fixed in 1.20.20}
• Brewing Stand (Potion outline);
• Horse (MCPE-43234). ^{Fixed in 1.17.0}
• Player armor (Helmet and chestplate, MCPE-44592)

See attached images for comparison.

Notes: A fix was attempted, but the new textures are unused (see MCPE-151909)