Sakalti 1.06 - Gradually ASM compatibility fix

Changed with an ASM ClassVisitor bytecode pass:
- Replaced all 3 ItemStack.func_196083_a() calls with ItemStack.func_77978_p().
- Verified no func_196083_a method invocation remains in GraduallyEvents.class.
- This addresses the reported NoSuchMethodError mapping mismatch.

Important: archive integrity and bytecode references were checked. A live Forge 1.16.5 launch was not available here, so in-game runtime behavior is not claimed as verified.
