Traveler's Backpack

✨ Added Polymorph compatibility (if polymorph installed, recipe conflicts show polymorph recipe selector button in backpack crafting upgrade tab)
🔧 Improved ability ticking logic
🔧 Sleeping bag tweaks
🐛 Fixed issue that caused backpack to not open in specific conditions
🐛 Fixed bundle/shulkerbox saving issue inside backpack container
🐛 Fixed specific crash with Create while using Spider Backpack ability