Dynamic Light Addon + Offhand Torch (Second Hand) (Achievements Friendly)

Tweaked the lighting of items by one unit to maintain consistent brightness:

• deepslate_redstone_ore: -1 (7 → 6)
• soul_campfire: +1 (10 → 11)
• beacon: -1 (16 → 15)
• redstone: +1 (4 → 5)
• experience_bottle: +1 (6 → 7)
• glowstone: -1 (14 → 13)
• end_rod: -1 (13 → 12)
• pearlescent_froglight: -1 (14 → 13)
• redstone_block: -1 (9 → 8)
• prismarine_crystals: +1 (6 → 7)
• magma: -1 (11 → 10)
• ender_chest: -1 (8 → 7)
• brewing_stand: -1 (10 → 9)
• Added official support and testing for Minecraft version 26.50.